DE102020212824A1 - Device for cleaning vapors - Google Patents

Abstract

A device for cleaning fumes has a device (40) for treating fumes with a fluid-tight container, a fumes inlet (41), a fumes outlet (42) and a flow connection which connects the fumes inlet (41). the vapor outlet (42), and a fan (15) by means of which the container can be subjected to negative pressure.

Description

The invention relates to a device for cleaning vapors. The invention also relates to a cooking appliance. Finally, the invention relates to a method for treating vapors and a method for operating a cooking appliance.

From the DE 10 2019 205 337.8 a device for heating food to be cooked is known. The content of DE 10 2019 205 337.8 as well as the PCT/EP2020/060413 (AZ: P200242WO) is incorporated by reference into the present application.

EP 2 254 422 B1 and DE 10 2008 012 961 A1 relate to a cooking appliance with a vapor condensation device.

There is a need to improve such a vapor condensation device, in particular a corresponding cooking appliance.

This object is solved by the objects of the present invention.

The invention comprises a large number of different aspects which, taken individually or in combination with one another, contribute to the solution of this object and are the subject matter of the invention.

Insofar as components of the subject matter of the invention are referred to below in the singular or plural, this is not understood to be restrictive unless explicitly described otherwise. In particular, advantageous embodiments which are described using a single component can also be provided for a plurality of corresponding components and vice versa.

According to one aspect of the invention, a device for treating fumes has a container that can be filled at least in regions with cooling fluid and has a fumes inlet, a fumes outlet and a through-flow connection connecting the fumes inlet to the fumes outlet.

According to one aspect of the invention, the device has at least one means for mixing the cooling fluid in the container.

The agent is used in particular for active mixing of the cooling fluid in the container. It is used in particular to mix the cooling fluid in the container, which is independent of the extracted vapor flow. The means for mixing the cooling fluid can be arranged at least partially, in particular completely, in the container. In particular, it can be a constructive component.

The vapors are, in particular, cooking vapors. These are also referred to as cooking vapors or baking vapors. In particular, they can contain steam, aerosols and fats.

The vapors can in particular come from a receiving space of a cooking appliance, in particular can be sucked out of a corresponding receiving space. They can also occur when operating a hob. They generally arise during cooking and/or baking.

The device is in particular a device for a cooking appliance and/or a device for a device for extracting cooking vapors.

The device for treating the fumes serves in particular to reduce the temperature and humidity of fumes, in particular of fumes that have been sucked off, and/or to clean them.

In addition to undesirable moisture and/or soiling problems, vapors can also lead to an odor nuisance. These problems can be solved with the help of the present invention, but at least they can be reduced.

In particular, a cooling of a vapor flow and/or a reduction in the relative humidity in the vapor flow is referred to as a treatment. The treatment may also include particle and/or grease removal. A corresponding treatment is sometimes also referred to as preconditioning of the vapors. In particular, it can serve to prepare the vapor flow for further treatment steps, in particular for filtration in a downstream filter device. By means of an ent Speaking treatment or preconditioning of the vapors can be achieved in particular that they have a temperature and / or humidity, in particular relative humidity, which are in a range in which a subsequent filter device, in particular with an activated carbon filter and / or another filter, for example an electrostatic precipitator and/or a plasma filter, works particularly well.

In particular, the filter effect of a downstream filter, in particular an odor filter, in particular an activated carbon filter, can be improved by means of a corresponding treatment. In addition, the service life of a corresponding filter can be extended.

The container may include a tub. In particular, the tub can be closed with a lid. Apart from defined inlets and outlets, the trough can be closed in particular in an airtight and/or vapor-tight manner.

In particular, the trough forms a base trough of the container. The base pan of the container is also referred to as the lower shell. The lid of the container is also referred to as the upper shell.

The means for mixing the cooling fluid in the container can serve in particular to swirl the cooling fluid, to circulate the cooling fluid in the container or to pump the cooling fluid around in the container.

The means for mixing the cooling fluid in the container can in particular also be used to flush the container with a cleaning liquid.

In particular, a pump, in particular a circulating pump, can serve as the means for mixing the cooling fluid. The pump can fulfill several functions. You can switch between pumping out and circulating, in particular by changing the direction of rotation of the impeller or by using an internal flap.

The cooling fluid, in particular in the form of cooling water, can be flushed by means of the circulating pump in a circuit over the bottom surface of the container and/or over a heat exchanger plate, which will be described below.

The edges of the container are preferably rounded, in particular in such a way that no dead zones form in the container. In particular, the base pan of the container can be designed without dead zones.

In particular, cooling water, in particular fresh water, serves as the cooling fluid. The cooling water can in particular have a temperature in the range of room temperature. In particular, it can have a temperature in the range from 5.degree. C. to 35.degree. It preferably has a temperature of at most 20°C.

The device may also include a means for removing the cooling fluid from the container. For this purpose, the container can in particular have a cooling fluid outlet. This is preferably arranged in an area at the lowest point of the container. The cooling fluid outlet can be openable and closable. In particular, it can be opened and closed in a controlled manner.

In particular, the device can have a second pump for pumping liquid out of the container. The second pump can pump out the liquid in particular through the outlet at the lowest point of the container.

The pumps, in particular the circulating pump and/or the waste water pump, can be connected to the cover or to the base pan of the container. In particular, they can be attached to the lid of the container. You can be spaced from the base pan of the container or sit on the bottom of the pan.

The pumps preferably each have an inlet which is arranged as close as possible to the bottom of the container. The distance between the pump inlet and the container bottom is preferably at most 1 cm, in particular at most 5 mm, in particular at most 2 mm, in particular at most 1 mm.

The device may have a designated inlet for a cooling fluid. This can be arranged at a distance from the vapor inlet. The inlet for the cooling fluid is preferably arranged closer to the vapor outlet than to the vapor inlet. As a result, the cooling effect of the cooling fluid can be improved, in particular better utilized. The inlet for cooling fluid can also be close to the vapor inlet, in particular at a distance of at most 10 cm, in particular at most 5 cm.

A flow path of the cooling fluid through the container can be specified by the positioning of the inlet for a cooling fluid in the container.

The inlet for the cooling fluid can in particular be arranged at a distance from the cooling fluid outlet.

The inlet for the cooling fluid can in particular be arranged in such a way that the cooling fluid, when flowing through the container, leads to a flow, in particular a thorough mixing of the cooling fluid in the container, in particular in the floor pan.

The inlet for the cooling fluid can in particular be arranged in such a way that the cooling fluid first flows over a cooling plate arranged in the container and from there it reaches the floor pan via one or more defined outlets. In particular, it gets into the base pan in an area that is at a distance from the cooling fluid outlet. In particular, it can get into the base pan in an area that is as far away as possible from the cooling fluid outlet. For example, it can get into the floor pan in a diagonally opposite area to the cooling fluid outlet. From there it flows through the floor pan to the cooling fluid outlet.

A suitable arrangement of the cooling fluid inlet and/or the outlet openings in the cooling plate can ensure that the cooling fluid in the container can be completely exchanged simply by adding fresh cooling fluid and pumping out cooling fluid. In this case, the means for mixing the cooling fluid can be dispensed with.

According to one aspect of the invention, the means for mixing the cooling fluid is designed in such a way that it can generate a countercurrent to the vapor flow in the cooling fluid in the region between the vapor inlet and the vapor outlet. In particular, it is possible to use a circulating pump to generate a flow in the cooling fluid which has a component in an area adjacent to the vapor outlet of the container which has a component of the vapor flow in an area upstream adjacent to the vapor outlet, in particular in the direction of the vapor -Inlet to vapor outlet, is opposite. Opposite components or partially opposite directions are present here if their scalar product is negative. The direction of a velocity vector, in particular a temporally and/or spatially averaged velocity, is considered as the direction of flow.

With the aid of the means for mixing the cooling fluid, it can be ensured that the cooling fluid in the container does not only absorb thermal energy on the surface through contact with the vapor flow. In particular, it can be achieved that the cooling fluid in the container essentially has a homogeneous temperature. In particular, the temperature of the cooling fluid can be essentially the same throughout the entire container. It is also possible to form several different areas in the container, within which the temperature of the cooling fluid is essentially the same, with the temperature of the cooling fluid being different in different areas. This is described in more detail below.

The arrangement of the vapor inlet in the container, in particular in its lid, can be central, in particular central to a central plane of the container. According to one embodiment, the vapor inlet can be arranged opposite the vapor outlet with regard to a central area of the container. Vapor inlet and vapor outlet can be arranged in particular in opposite edge regions of the container with respect to a central region. In particular, they can be arranged in such a way that their spacing is maximized. This enables a particularly large flow path for the vapors in the container. In the case of flow guide elements, which influence the flow of vapors in the container, the distance is measured here, in particular along the intended flow path of the vapors. For example, it is possible to arrange the fume inlet adjacent to the fume outlet, but to influence the flow path in the container using flow-guiding elements in such a way that the fumes flow from the fume inlet to the fume outlet essentially completely through the container, for example along its circumference .

According to one aspect of the invention, the device for treating vapors has at least one sensor for detecting at least one parameter of a vapor flow and/or a coolant in the container.

The effectiveness of the treatment can be detected, in particular controlled, in particular regulated, by means of such a sensor. In particular, the sensor can be signal-connected to a control device for controlling the mixing, in particular the circulation, of the coolant in the container and/or the addition of coolant, in particular fresh water, to the container and/or the discharge of coolant and/or waste water from the container and /or the suction of the fumes by means of a suction device, which in particular can also be designed as a separate component separate from the treatment device.

Instead of a single sensor, multiple sensors can also be provided.

The at least one sensor can be designed as a mechanical sensor and/or an electrical sensor and/or a chemical sensor and/or an optical sensor. In particular, it can be a temperature sensor and/or a humidity sensor and/or a conductivity sensor and/or a volume flow sensor.

The at least one sensor is preferably arranged downstream of the vapor outlet. In particular, it can be arranged in a riser pipe which is connected to the vapor outlet.

The at least one sensor can also be arranged upstream of the vapor outlet, particularly in the container, or upstream of the vapor inlet, particularly in the area of a connecting piece between the receiving space and vapor inlet or in the receiving space of the cooking appliance.

The parameter of the vapor flow can in particular be its temperature, its relative humidity, its degree of contamination or its volume flow.

The parameter of the coolant in the container can in particular be its temperature, its fill level or its degree of contamination.

The coolant can be the cooling fluid in the container or another coolant, in particular a cooling element, in particular in the form of a solid body, for example a cooling plate which is described in more detail below.

According to one aspect of the invention, the device is designed in such a way that vapors can experience multi-stage cooling when flowing through the flow-through connection.

The vapors can, in particular, experience pre-cooling and after-cooling as they flow through the flow-through connection. This can be achieved in particular in that the vapors flow through areas with different temperatures, in particular different surface temperatures, when flowing through the flow-through connection.

Provision can in particular be made to provide means by means of which it can be achieved that the cooling fluid has a lower temperature, in particular a lower surface temperature, in an area adjacent to the vapor outlet than in an area adjacent to the vapor inlet.

In particular, the container can have a number of partial areas for receiving the cooling fluid. In this case, the partial areas can be designed in particular in such a way that mixing of cooling fluid from different areas is reduced, in particular prevented. For example, the partial areas can be partially or completely separated from one another by partition walls.

According to one aspect of the invention, the through-flow connection has a meandering structure. For this purpose, partitions or dividing walls can be provided in the container to direct the vapor flow. The meandering structure, in particular the partition walls, can extend over the entire height of the container. However, it can be advantageous to form the partitions in such a way that they end at a distance from the bottom of the container. In particular, the meandering structure can be designed in such a way that it is only formed in an upper partial area of the container, but not in a lower partial area of the container. During operation of the device, the partition walls are preferably immersed in the cooling fluid in the container. They extend in the vertical direction, in particular, into an area which is below an intended fill level, for example 1 cm, 2 cm or 3 cm. This means that the vapor flow must follow the meandering structure, while the cooling fluid can circulate freely below the meandering structure in the container, in particular in the base pan of the container or in the sub-areas provided for this purpose.

In particular, the meandering structure forms a means for lengthening the flow path of the vapor flow in the container. According to one aspect of the invention, the flow path of the flow of vapor in the container is larger than the largest diameter of the container. The length of the flow path can in particular be at least one and a half times, in particular at least twice, in particular at least three times as large as the largest diameter of the container.

The length of the flow path in the container can be in particular at least 30 cm, in particular at least 40 cm, in particular at least 50 cm, in particular at least 60 cm, in particular at least 80 cm, in particular at least 100 cm.

According to one aspect of the invention, the device for treating vapors has at least one means for adding a cooling fluid to the container and at least one cooling element in the form of a solid body, in particular in the form of a cooling plate.

The cooling fluid in the container and the cooling element form part of a cooling device.

The cooling device can also serve as a condensation device. In particular, the cooling element can serve as a condensation element on which the vapors can at least partially condense.

The cooling element is arranged in particular in the container and is in particular not formed by a boundary wall of the container. In particular, it is arranged at a distance from the bottom and the lid of the container.

In principle, the cover of the container itself can also be designed as a cooling element and/or form a corresponding cooling element. In this case, the lid can advantageously be cooled from the outside. In particular, it can have fluid cooling and/or air cooling on its outside.

During operation of the treatment device, the cooling fluid forms part of the cooling device. In particular, the surface of the cooling fluid in the container forms a cooling element. In other words, the cooling device can have a liquid cooling element.

The cooling device is designed in particular in such a way that the vapors flow between a layer of the cooling fluid in the container and the cooling element during operation of the device for preconditioning the same.

The cooling device is in particular designed in such a way that vapors flow between two layers of cooling fluid, in particular between two layers of liquid, during operation of the device for preconditioning the same. Here, the lower layer is formed by the cooling fluid in the base pan of the container. The second liquid layer is formed by cooling liquid, in particular cooling water, on the solid-state cooling element.

According to one aspect of the invention, the at least one fixed cooling element has one, two or more metal plates. In particular, the metal plates are aligned parallel to one another. In particular, they are arranged essentially parallel to the lid of the container. In particular, they can have a maximum inclination relative to the lid of the container of at most 10°, in particular at most 5°, in particular at most 3°, in particular at most 1°.

The metal plate is also referred to as a cooling plate.

According to one aspect of the invention, the at least one plate is aligned at least in regions inclined to the horizontal. The tilt to the horizontal can be at least 1°, in particular be at least 3°. It can be at most 10°, in particular at most 5°. By tilting the plate to the horizontal, a defined flow direction for cooling liquid on the plate is achieved.

The metal plate can have a surface structure, in particular a rolled-in and/or embossed surface structure. It can also have a polished surface. This can improve the condensation on the surface of the metal plate.

The metal plate can have a camber. As a result, a predetermined compensation direction for a possible thermal expansion of the metal plate can be specified. As a result, mechanical stresses in the metal plate in the container can be avoided. The cambering of the metal plate is in particular such that the metal plate bulges in the vertical direction, in particular downwards, in the event of thermal expansion.

The plate can be provided with cooling fins. This allows the surface to be increased. This can lead to an improvement in the cooling effect.

The shape of the at least one metal plate can be adapted in particular to the shape of the container, in particular to the cross section of the container, in particular its base pan or its upper shell.

The at least one metal plate can in particular each have an outer circumference which essentially corresponds to the inner cross section of the trough of the container.

The plates can, in particular, be arranged in a sealed manner on the circumference, in particular circumferentially, in the container, in particular in its upper shell. One or more defined passages, in particular in the form of overflow openings, can be provided here. The plate may also have one or more deeply embossed areas. A defined cooking medium level on the plate can be guaranteed by the embossed areas.

The at least one metal plate is arranged in particular at a distance from the lid of the container and at a distance from the bottom of the container. In particular, it is arranged in such a way that a space for cooling liquid remains between it and the cover of the container.

A space is preferably left between the plate and the bottom of the container for the cooling fluid.

In principle, it is also possible to arrange one or more tubular cooling elements in the container. A coolant can flow through the tubular cooling elements. In particular, they can be cooled in a controlled manner by means of a coolant. In particular, they can be components of an external, in particular a closed, cooling circuit. This can be advantageous if contact between the vapors and the coolant is to be avoided.

According to one aspect of the invention, the at least one cooling element, in particular the at least one metal plate, can be cooled by bringing it into contact with a cooling fluid.

This can be the same cooling fluid as that in the container. In particular, water, in particular fresh water, can serve as the cooling fluid. In general, the cooling fluid is preferably a liquid, e.g. H. a coolant.

The at least one metal plate described above can be cooled in particular by applying cooling water. This is also known as active cooling.

One or more dosing elements can be provided for introducing the cooling water, in particular in the form of fresh water, into the container, in particular for applying cooling water to the cooling element.

The addition of cooling fluid to the at least one cooling element can be controlled, in particular clocked. In particular, it can take place in a controlled manner as a function of one or more sensor signals. In particular, it can also be specified as a function of a selected operating mode of the cooking appliance. For this purpose, the device for treating vapors can in particular have different operating modes.

The cooling element, in particular the at least one metal plate, can in particular be part of a heat exchanger. Thermal energy can be transferred from the vapor flow to a cooling fluid flow, in particular a cooling water flow, by means of the heat exchanger.

In general, a heat exchanger can be arranged in the container of the device for treating vapors in order to cool the vapors. The heat exchanger can be formed in particular by the cooling element, which in particular can be overflown with cooling water, or can include this.

In principle, two or more heat exchangers, in particular according to the above description, can also be arranged in the container of the device for treating vapors. With regard to the vapor flow, these can be arranged parallel to one another or sequentially. With a plurality of heat exchangers, the cooling capacity for treating vapors can be controlled more flexibly. Individual heat exchangers can be switched on or off as required. This enables a particularly economical mode of operation.

According to one aspect of the invention, the at least one metal plate has one or more defined drains for draining cooling fluid into the container, in particular the base pan of the container.

In particular, the outflow can be designed in such a way that the cooling fluid forms a curtain.

A large number of defined outflows, in particular pore-like openings, can also be provided. This can create a rain shower effect. This leads to a particularly advantageous cooling of the vapor flow.

The outflow openings can in particular have a cross section in the range from 0.01 mm ² to 1000 mm ² . The cross section of the outflow openings in the cooling element is in particular at least 0.04 mm ² , in particular at least 0.1 mm ² , in particular at least 0.4 mm ² , in particular at least 1 mm ² . The cross section of the outflow openings in the cooling element can be at most 25 mm ² , in particular at most 16 mm ² , in particular at most 9 mm ² .

The number of drainage openings in the at least one cooling plate can range from 1 to 1000. The number is in particular at most 1000, in particular at most 20.

The at least one outflow opening of the at least one metal plate can be arranged in particular in such a way that the outflowing cooling fluid flows in a predetermined area into the base pan of the container. This area can in particular be adjacent to the vapor outlet of the container. In particular, it can be closer to the vapor outlet than to the vapor inlet. The outflow opening of the at least one metal plate can in particular also be arranged diagonally opposite the cooling fluid outlet in the container.

The outflow opening can in particular form an overflow opening.

According to one aspect, the at least one metal plate each has an overflow edge.

In this way it can be achieved that the metal plate can be completely wetted with cooling fluid, in particular cooling water. In particular, the metal plate can be covered with cooling water without any gaps. Cooling water can generally flow over it.

In general, the plate can have one or more defined overflow edges. The defined overflow edges can ensure that a minimum water level always remains on the upper side of the metal plate. The water on the metal plate cools it down. It serves in particular as a condensation element on which moisture from the vapors can condense.

In particular, the metal plates can each form carriers for one layer, in particular a closed layer, with cooling water.

According to one aspect of the invention, the device has at least one inlet for supplying a cooling liquid to the container, wherein the cooling liquid can be supplied to the container in such a way that the through-flow connection runs at least in regions between two liquid layers.

In this case, the upper layer of liquid can, as previously described, be carried by a carrier, in particular in the form of a cooling plate.

The device has in particular a carrier arranged in the container for a layer of cooling liquid. The device is thus designed in such a way that the through-flow connection is at least in certain areas, in particular over at least 50%, in particular at least 60%, in particular at least 70%, in particular at least 80%, in particular at least 90% of a base area of the container after a suitable supply of cooling liquid to the container between two layers of liquid.

The metal plate can be fastened in the container when it is assembled. In particular, it can be clamped between the upper shell and the lower shell of the container.

The cooling element can also have air cooling or be designed in such a way that it can be cooled by means of air cooling.

The cooling element can also be part of a closed cooling circuit.

According to a further aspect of the invention, the container has a plurality of partial flow areas for the cooling fluid.

This can improve the cooling effect.

Different partial flow areas can be at least partially separated from one another by flow-guiding means, in particular by partition walls. Different sub-areas are designed in particular in such a way that mixing of the cooling fluid within one sub-area is greater than between two different sub-areas.

According to one aspect of the invention, the container has at least one inlet opening for the cooling fluid, which is arranged such that the container can be supplied with cooling fluid in an area of the through-flow connection which is closer to the vapor outlet than to the vapor inlet. As a result, after-cooling of the vapor flow can also be achieved or improved.

It is also possible that the container has several inlet openings for the cooling fluid. This makes it possible to supply cooling fluid to the container in a targeted manner at different points.

According to one aspect of the invention, the container has a fixed water connection. This allows the addition of fresh water as a cooling fluid.

The fresh water can be applied in particular to the cooling element, in particular to the cooling plate. In particular, it can flow over the cooling plate and run from there into the base pan of the container.

It is also possible to supply fresh water directly as a cooling fluid to the floor pan, in particular to one or more of the partial areas described above.

Another possibility for cooling can be formed by internal cooling hoses or pipes. At the two ends, these are combined in a supply line. Inside the container, in order to increase the surface area, they are in the form of tubes or hoses with a small diameter, in particular a diameter of no more than 2 cm, in particular no more than 1 cm, in particular no more than 5 mm, in particular no more than 3 mm, in particular no more than 2 mm, in particular formed at most 1 mm.

According to one aspect of the invention, cooling fluid, in particular cooling water, can be introduced into the container at one or more points by means of a nebuliser, in particular by means of a nebulisation nozzle. As a result, the cooling effect can be further improved.

A nebulization device can be provided in particular for supplying fresh water. In this case, there is at most a slight risk of the nebulization device, in particular the nebulization nozzle, becoming clogged with impurities.

According to one aspect of the invention, the device has a control device, by means of which the mixing of the cooling fluid in the container and/or the addition of cooling fluid to the container can be controlled, in particular regulated.

The mixing of the cooling fluid in the container and/or the control of the addition of cooling fluid to the container can be controlled in particular as a function of a temperature of the vapor flow, in particular in an area downstream of the vapor outlet, the relative humidity of the vapor flow, in particular in an area downstream of the Vapour-outlet, a temperature difference of the vapor flow in the region of the vapor inlet and the vapor outlet, a suction power of an external fan, in particular the volume flow of the vapors or a combination of two or more of these parameters can be controlled.

Appropriate control can improve the efficiency of the device. In particular, the consumption of cooling fluid, in particular cooling water, can be reduced.

According to one aspect of the invention, the flow-through connection has a flow cross-section that increases in the flow-through direction. The flow cross section can in particular increase monotonically, in particular strictly monotonically. It can increase steadily or in leaps and bounds. In particular, it can be provided that the flow cross section of the vapor outlet is larger than the flow cross section of the vapor inlet. The flow cross section of the vapor outlet can be at least 1%, in particular at least 5%, in particular at least 10%, in particular at least 30%, in particular at least 50% larger than the flow cross section of the vapor inlet.

The minimum flow cross-section in the container can be in particular at least 1 cm ² , in particular at least 3 cm ² , in particular at least 8 cm ² . This information can refer to the empty container. It relates in particular to the free flow cross-section for the flow of vapor when the container is filled with cooling liquid up to a predetermined level.

In particular, the container has a cross-sectional area of at least 100 cm ² , in particular at least 200 cm ² , in particular at least 400 cm ² , in particular at least 800 cm ² .

A corresponding value applies to the free surface of the cooling liquid in the container when it is filled up to a predetermined level.

The area of the cooling plate on which water can stand is at least 100 cm ² , in particular at least 200 cm ² , in particular at least 400 cm ² , in particular at least 800 cm ² , in particular at least 1200 cm ² , in particular at least 1350 cm ² , in particular at least 1600 ^cm2 . It is at most as large as the cross-sectional area of the container.

According to one aspect of the invention, an actuator is arranged downstream of an outlet of the circulation pump, by means of which it is possible to switch between different circulation circuits.

This makes it possible to use the circulating pump on the one hand for mixing cooling fluid in the container and/or for flushing the container with cleaning liquid and on the other hand for pumping liquid from the container into the cooking chamber of the appliance.

A corresponding switchability of different circulation circuits leads in particular to advantages with regard to the cleaning of the receiving space and/or with regard to the cleaning of the container of the device for treating vapors.

It can be provided in particular to introduce a cleaning agent or another reaction agent via the fluid outlet in the receiving space into the container, in particular into the floor pan, for cleaning the container for treating vapors and/or for sterilizing it. The corresponding agent can then either be circulated in the container or circulated in a circuit which includes both the container and the cooking space.

Corresponding circulation modes can be provided in succession according to a predetermined scheme.

A three-two-way valve, that is to say a valve with a total of three connections, two of which are different outlets, can be used as the actuator by means of which switching between the different circulation circuits can take place. A four-three-way valve can also serve as an actuator. In particular, the actuator has two different outlet connections.

The actuator can be controlled in particular by means of a control device.

A separate supply opening for the addition of cleaning agents can also be provided in the container. This can be advantageous if the container is to be treated with cleaning agents that do not get into the cooking chamber of the cooking appliance.

When cleaning the cooking chamber, the container of the device for treating vapors can serve as a storage container for cleaning agents, in particular cleaning agents, which are circulated between the container and the cooking chamber during cleaning of the cooking chamber.

When cleaning the cooking chamber, the container of the device for treating vapors can also be cleaned at the same time.

The cleaning process can be monitored using the sensors described above. In particular, it can be provided that the cooking chamber is rinsed with fresh water at predetermined times during the cleaning process. One or more parameters of the rinsing water running out of the cooking chamber through the fluid outlet can then be detected by means of one of a number of sensors.

This makes it possible to end the cleaning process once a certain level of cleanliness has been reached. As a result, cleaning chemicals can be saved and/or water consumption reduced.

Another object of the invention is to improve a device for cleaning vapors.

This object is achieved by a device with a device for treating vapors according to the preceding description.

According to one aspect of the invention, the device comprises a fan for subjecting the container to negative pressure. Specifically, the fan is arranged downstream of the fumes outlet of the direction for treating fumes.

The fumes can be sucked through the device for treating fumes with the help of the fan. This has proven to be particularly efficient in order to remove the vapors from a food receiving space.

According to one aspect of the invention, the device has at least one filter device which is arranged downstream of the vapor outlet of the device for treating vapors and is connected to it in a fluid-conducting manner.

The filter device can in particular have one or more odor filters, in particular one or more activated carbon filters.

A combination of the above-described device for treating vapors with a filter device arranged downstream of this allows, on the one hand, a particularly advantageous cleaning of the vapors. In particular, it allows a reduction in the moisture content, the fat content and a reduction in other contaminants, in particular odours.

In addition, the fumes can be pretreated with the aid of the device for treating fumes in such a way that the filter device works in a particularly favorable, in particular in an optimal operating mode. With the help of the device for treating fumes, it can be achieved in particular that the fumes in the area of the filter device have a temperature and/or relative humidity that is within a predetermined range.

The device for treating vapors in particular makes it possible to extend the service life of the filters.

According to one aspect of the invention, the device for cleaning vapors has a device for treating vapors according to the previous description, a fan for subjecting the container to negative pressure and at least one filter device, the fan being arranged downstream of the vapor outlet, and wherein the filter device is arranged downstream of the vapor outlet of the device.

In particular, the filter device is connected in a fluid-conducting manner to the device for treating vapors and to the fan. The filter device can be arranged in particular in the flow path between the device for treating vapors and the fan.

According to one aspect of the invention, the filter device is arranged above the device for treating vapors. In particular, it is arranged at least 10 cm, in particular at least 20 cm, in particular at least 30 cm above the device for treating vapors, in particular above the floor pan of the device for treating vapors. This can reliably prevent liquid, in particular cooling liquid, from getting into the filter device from the device for treating vapors.

One or more riser pipes, among other things, can be provided for the fluid-conducting connection of the vapor outlet of the device for treating vapors with the filter device.

The fan can be connected to a control device with a sensor device in a signal-transmitting manner. The sensor device can have one or more sensors. With regard to their details, reference is made to the previous description.

The control device for controlling the fan for sucking vapors out of the receiving space can also be connected in a signal-transmitting manner to a control device of the cooking appliance or integrated into such a device. This makes it possible to control the suction of the fumes depending on an operating mode of the cooking appliance. For details see the PCT/EP2020/060413 referred.

Another object of the invention is to improve a cooking appliance for cooking food.

This object is achieved by a cooking device with a device for treating vapors according to the preceding description.

The cooking appliance is, for example, an oven, in particular a combi-steam oven, or a steam cooker. It can also be a microwave oven or a combination oven with a choice of oven, steamer and microwave functions. In general, the cooking appliance is a kitchen appliance.

This object is also achieved by a cooking appliance with a ventilation device for sucking vapors out of the receiving space and a device for treating vapors sucked out of the receiving space, which is arranged in a negative pressure area of the ventilation device.

The advantages result on the one hand from those of the device for treating fumes, on the other hand the arrangement of the same in a negative pressure area of a ventilation device enables a controlled, controlled suction of the fumes and passing them through the treatment device. In particular, this can take place in a much more controlled manner than vapor escaping from the receiving space of the cooking appliance due to overpressure occurring there.

A reversibly detachable connecting piece can be provided for the flow-conducting connection of the fluid outlet of the receiving space with the vapor inlet of the device for treating vapor.

According to one aspect, the connecting piece can be fixed, in particular latched, in a sealing manner in the receiving space of the cooking appliance. Here, in the area of a bearing edge, a sealing element, esp special be provided in the form of a sealing ring. This can be compressed when the connecting piece is latched with elements provided for this purpose in the receiving space.

The connection of the receiving space with the device for the treatment of fumes via a separate connecting piece allows a relative play between these two.

The device for treating vapors can in particular be mounted in a floating manner relative to the receiving space. In particular, it can be arranged to be movable relative to the receiving space. Here, in particular, it has at least one degree of freedom. In particular, it can have both one degree of freedom in the vertical direction and one or two degrees of freedom in the horizontal direction.

The connection piece can be plugged into the container of the device for treating vapors through the vapor inlet. It can, in particular, be displaceable in the axial direction and dip through the vapor inlet into the container.

The connecting piece can be secured against accidentally slipping out of the vapor inlet.

In particular, it can be secured against unintentionally slipping out of the container by a sufficiently large immersion depth. The container, in particular its receptacle for the connecting piece, and the connecting piece can overlap in the axial direction of the connecting piece by at least 1 cm, in particular by at least 2 cm, in particular by at least 3 cm.

A seal can be provided in the vapor inlet, which seals against the connection piece when the connection piece is immersed in the container.

A bayonet lock can be provided for latching the connecting piece to the receiving space. Other types of connection are possible. For example, the connecting piece can also be screwed into the cooking chamber.

The connector may include a screen. The sieve is used to hold back leftover food from the cooking compartment.

The connecting piece can have a connecting tube, in particular in the form of a round tube. The tube has an outer diameter which is adapted to the inner diameter of the vapor inlet.

The cooking chamber and the device for treating vapors are aligned relative to one another by means of the connecting piece.

The connecting piece enables an outwardly liquid-tight, in particular steam-tight, connection of the receiving space to the container of the vapor treatment device. This prevents liquid or vapors from the receiving space from reaching undesired areas of the cooking appliance and causing damage there.

The connecting piece can preferably be fixed in the receiving space without tools and/or released from the fixation without tools. As an alternative to this, special tools can be provided for fixing and/or releasing the connecting piece.

With the help of the connecting piece, a longitudinal expansion of the receiving space, which can occur due to temperature fluctuations, can be reversibly compensated. In particular, the connecting piece enables a connection that is sealed off from the outside between the receiving space and the container of the device for treating vapors, regardless of a possible expansion of the receiving space.

The connecting piece can form a means for thermal decoupling between the receiving space and the device for treating vapors. In particular, it can be made of a material with a low thermal conductivity or have at least one peripheral area made of a corresponding material. The connecting piece can in particular be made of plastic, in particular of a heat-resistant plastic, or have at least one area made of a corresponding plastic. Under heat-resistant is understood to mean material resistance up to temperatures of at least 100°C, in particular at least 200°C, in particular at least 300°C.

The connecting piece can also be made of the same material, at least in some areas, as the boundary walls of the receiving space of the cooking appliance. In particular, it can be made of a material which has a similar thermal expansion coefficient, in particular the same as the material of the boundary walls of the receiving space. In this way it can be ensured that it lies tightly against the fluid outlet of the same even when the receiving space expands.

The connecting piece can also be made of a flexible material, in particular an elastic material, in some areas or completely. In this case, it can advantageously also be connected in a fixable manner to the container of the device for treating vapors. In particular, it can be designed in the manner of a hose or have a hose-like area.

The connecting piece can be positively connected to the receiving space.

The connecting piece can be positively connected to the container of the device for treating vapors.

As already described above, a fan for sucking off vapors from the receiving space can be arranged downstream of the device for treating vapors. The device for treating vapors can thus be subjected to negative pressure.

Vapors produced in the cooking chamber can also be pressed into the container of the device for treating vapors as a result of excess pressure in the cooking chamber, in particular as a result of steam expansion. The device for treating vapors can in particular also be operated without a fan device for generating a negative pressure.

According to the above description, a filter device, in particular with at least one odor filter, can be arranged downstream of the device for treating vapors. For further details, reference is made to the previous description.

In general, a cooking appliance with a device for treating vapors is improved in that the device for treating vapors is arranged in a low-pressure area of the ventilation device.

Such an arrangement of the device for treating vapors ensures that vapors flow through it in a particularly well controllable manner.

The device for treating vapors is, in particular, a device as described above.

In particular, the device can have at least one means for reducing a temperature and/or a humidity of the extracted vapors. The container of the device can in particular have a floor pan for holding a cooling liquid. In this case, the cooling liquid can form the means for reducing the temperature and/or the humidity of the extracted vapors.

The means for reducing the temperature and/or humidity of the extracted vapors can be arranged or is arranged in particular in the container. It is in particular a means provided in addition to the container, which is in particular not formed by the container or a part of its components.

In particular, a volume of cooling liquid that can be arranged in the container can serve as a means for reducing the temperature and/or the moisture content of the extracted vapors. In particular, the container can have a fluid inlet for supplying cooling liquid. The fluid inlet is in particular separate, in particular spaced apart, from the vapor inlet and vapor outlet. The cooling liquid can in particular be cooling water. The container can in particular have a fixed water connection. For further details, reference is made to the previous description.

The device for treating fumes is in particular arranged in the cooking appliance in such a way that the fumes are or at least can be sucked in by the fan of the ventilation device through the device for treating fumes.

According to one aspect of the invention, the cooking appliance has a control device, by means of which mixing of the cooling fluid in the container and/or addition of cooling fluid to the container can be controlled.

Another object of the invention is to improve a device for extracting cooking fumes.

This object is achieved by a device with a device for treating vapors according to the preceding description.

The advantages result from those already described. With the help of the device for treating vapors, it is possible in particular to reduce the moisture content of the vapors. This can prevent undesirable condensation effects, especially in inaccessible areas behind kitchen furniture.

The device for extracting cooking vapors can be an extractor hood. In particular, it can be a device for extracting cooking vapors downwards, which is sometimes also referred to as a hob ventilator or downdraft ventilator.

The device for treating vapors can be integrated into the device for extracting cooking vapors, in particular into a downdraft fan. It can also be designed as a separate module. In this case, it can be positioned flexibly, for example in the base area of a base cabinet, or in, on or behind a wall cabinet. In particular, it can be retrofitted to an existing extractor device, in particular to an extractor device with a separate fan module.

When using the device for treating vapors with a fume hood, the precise configurations of the device for treating vapors can be adapted to its specific circumstances. Provision can in particular be made to adapt the dimensioning of the device for treating vapors, in particular its container, to the usually significantly larger volume flow of a fume hood. In particular when the device for treating vapors is designed as a separate module, its dimensions do not have to be limited to the typical installation dimensions of a cooking or baking appliance. In particular, the container of the device for treating vapors can also have a maximum extension in at least one direction of more than 60 cm, in particular more than 90 cm, in particular more than 120 cm.

The device for treating vapors can in particular be arranged upstream of an odor filter, in particular an activated carbon filter.

Another object of the invention is to improve a cooktop system.

This object is achieved by a hob system with at least one hob and a device for extracting cooking vapors as described above.

The hob system can in particular be an assembly unit with at least one hob and a device for extracting cooking vapors downwards. In this case, it can have a simply coherent carrier plate for the food to be cooked. A cooking vapor inflow opening can be provided in the carrier plate. The cooking vapor inflow opening is, in particular, completely surrounded by the cooking product support plate. In particular, it can be arranged in a central area of the food support plate. For details see the EP 2 975 327 B1 referred. The cooking vapor inflow opening can also be arranged in a decentralized manner in the cooking product support plate.

The hob system can be a compact device. This means that all the components of the hob system are integrated into a common device. This can lead to a particularly compact design, in particular to a design with an overall height of at most 30 cm, in particular at most 25 cm, in particular at most 21 cm.

It is also possible to provide a separate fan module as the fan of the device for extracting cooking vapors. A corresponding fan module can be positioned particularly flexibly, for example in the base area of a base cabinet.

The device for treating vapors can be integrated into the hob system, in particular into a compact device. It can also be designed as a separate module. In this case, it can be positioned flexibly, for example in the base area of a base cabinet. In particular, it can be retrofitted to existing hob systems, in particular hob systems with a separate fan module.

Another object of the invention is to improve a method for treating vapors.

• - Bereitstellen eines Gargeräts gemäß der vorhergehenden Beschreibung,
• - Absaugen von Wrasen aus dem Aufnahmeraum,
• - wobei die Wrasen durch eine Einrichtung zur Behandlung von Wrasen gemäß der vorhergehenden Beschreibung gesaugt werden.

This task is solved by a procedure with the following steps:

• - Providing a cooking device according to the previous description,
• - extraction of vapors from the recording room,
• - the fumes being sucked through a device for treating fumes according to the preceding description.

As already noted, the flow of vapors can be controlled particularly well by sucking in the vapors through the device for treating vapors.

The object is also achieved by a method for treating vapors, in which the vapors flow through, in particular are sucked through, between two layers of liquid to reduce their temperature and/or relative humidity.

It has been found that this leads to a particularly advantageous reduction in the temperature and relative humidity of the vapors.

In this case, the two liquid layers are spaced apart from one another, in particular in the vertical direction. In particular, there is a lower liquid layer and an upper liquid layer. In this case, the upper liquid layer is carried in particular by a cooling element, in particular in the form of a metal plate. For further details, reference is made to the previous description.

This object is also achieved by a method in which, in order to control the treatment of the fumes, cooling fluid is added to the device for treating fumes in a controlled manner.

The controlled addition of cooling fluid can on the one hand ensure that the vapors are sufficiently cooled. In addition, the consumption of cooling fluid can be reduced.

The addition of fresh water and/or the discharge, in particular pumping, of waste water can be clocked. In particular, it can be carried out according to a defined flowchart. As a result, the thermal capacity of the cooling water can be optimally utilized to cool the vapors. As a result, the cooling water consumption can be reduced, in particular minimized.

The flowchart can be selected depending on an operating mode of the cooking appliance, in particular automatically. In particular, it can be selected automatically as a function of the temperature and/or humidity in the cooking chamber. Corresponding flow charts can be stored as different operating modes in a control device.

The addition of the cooling fluid can be controlled in particular as a function of sensor data. For details, reference is made to the previous description and to the description of the exemplary embodiments.

According to one aspect of the invention, the device has different operating modes which differ with regard to timing of the addition of cooling fluid to the container.

In particular, the device can have two, three, four, five, six or more different operating modes.

The device can also have at least one freely programmable operating mode. In principle, all of the operating modes can be adaptable. This makes it possible to adapt the operating modes provided at the factory to different conditions, for example different fresh water temperatures.

The different operating modes can differ in particular by the timing and/or duration of the addition of cooling water to the container and/or the amount added in each case.

The timing can be in the range from 3 seconds to 5 minutes, for example.

The addition of fresh water can be in particular in the range from 10 ml to 5 l, in particular in the range from 50 ml to 2 l.

The total consumption of cooling water can be in the range from 50 ml/min to 4 l/min.

Provision can be made to generate continuous circulation of the cooling water in the container during operation of the device for treating vapors. This can be done with the help of the circulation pump. In principle, clocked circulation is also possible. This can in particular be linked to the clocking of the addition of cooling water. There is also no need to circulate the cooling water.

According to one aspect of the invention, before the addition of fresh cooling water to the container, the cooling water in the container, in particular in the floor pan, is first pumped out at least partially, in particular for the most part, preferably completely. At least 50%, in particular at least 70%, in particular at least 90%, of the cooling water in the floor pan can be pumped off, in particular before fresh cooling water is added to the container. Pumping out can be controlled via the full level sensor. In particular, it is possible to pump out the cooling water in the base pan to such an extent that the fill level in the base pan falls below a predetermined value.

By pumping out the cooling water in the container before new cooling water is added, it can be ensured that the fresh cooling water mixes as little as possible, preferably not at all, with cooling water that has already been heated and/or is dirty. This can reduce water consumption.

Another object of the invention is to improve a method for operating a cooking appliance.

• - Bereitstellen eines Gargeräts gemäß der vorhergehenden Beschreibung,
• - Erzeugen eines Zustands im Aufnahmeraum mit einer Temperatur in einem vorgegebenen Temperaturbereich und/oder einer Feuchtigkeit in einem vorgegebenen Feuchtigkeitsbereich,
• - gesteuertes Absaugen von Wrasen aus dem Aufnahmeraum,
• - wobei die Wrasen durch die Einrichtung zur Behandlung von Wrasen gesaugt werden.

This task is solved by a method comprising the following steps:

• - Providing a cooking device according to the previous description,
• - Generating a condition in the receiving space with a temperature in a specified temperature range and/or a humidity in a specified humidity range,
• - controlled extraction of vapors from the recording room,
• - the fumes being sucked through the device for treating fumes.

The advantages result from those previously described.

According to one aspect of the invention, the extraction and/or treatment of the fumes is controlled in such a way that the fumes in the area of a filter device arranged between the treatment device and the fan only briefly have a temperature that is above a predetermined maximum temperature.

Short-term is understood to mean a maximum of one minute, in particular a maximum of 30 seconds, in particular a maximum of 15 seconds.

Appropriate control of the suction and/or treatment of the fumes can ensure that the filter device always works reliably. In addition, damage to the filters can be avoided.

The maximum temperature is in particular at most 100°C, in particular at most 80°C, in particular at most 70°C, in particular at most 60°C, in particular at most 50°C, in particular at most 40°C, in particular at most 30°C.

The extraction and/or treatment of the fumes can be controlled in such a way that the fumes in the area of the filter device have a relative humidity that is above a predetermined limit value at most for a short period of time. In particular, this can be at most 80%, in particular at most 70%, in particular at most 60%, in particular at most 50%, in particular at most 40%, in particular at most 30%.

Targeted control of the treatment of the vapors can in particular ensure that the filter device always works in the optimum range.

• - Reduzierung der Absaugung,
• - Zugabe von Kühlfluid zur Einrichtung zur Behandlung von Wrasen, insbesondere Erhöhung der Taktung der Zugabe von Kühlfluid zur Einrichtung zur Behandlung von Wrasen,
• - Zugabe von Frischluft zum Wrasenstrom,
• - zumindest teilweise Umleitung des Wrasenstroms,
• - Ausgabe einer entsprechenden Information an den Nutzer.

According to one aspect of the invention, it can be provided that if the specified maximum temperature and/or the specified maximum relative humidity of the vapors is exceeded, at least one of the following measures is taken:

• - reduction of suction,
• - Addition of cooling fluid to the device for treating vapors, in particular increasing the timing of the addition of cooling fluid to the device for treating vapors,
• - Addition of fresh air to the vapor flow,
• - at least partial diversion of the vapor flow,
• - Output of corresponding information to the user.

Exceeding the specified maximum temperature and/or the specified maximum value of the relative humidity can be determined at a specific measuring point, in particular detected by sensors. The sensors described above can be used for this.

According to one aspect of the invention, provision can be made for dispensing with the addition of cooling water to the device for treating vapors in one or more operating modes of the cooking appliance. This is possible, for example, if the temperature in the cooking chamber remains below a specific limit value, in particular below 100° C., in particular below 80° C., in particular below 60° C., and/or if the humidity in the cooking chamber is below a predetermined limit value, in particular remains below 60%, in particular below 50%, in particular below 40%.

According to one aspect of the invention, cooling liquid can be pumped out of the container, in particular out of the floor pan, before a specific operating mode of the cooking appliance, in particular its fan device, is activated. For example, it can be advantageous to ensure that the fill level of the cooling liquid in the floor pan is below a predetermined limit value if the extraction capacity of the fan of the ventilation device, in particular the generated volume flow of the extracted fumes, exceeds a predetermined value.

According to one aspect of the invention, it can be provided that the filling level of the cooling liquid in the container, in particular in the floor pan, is controlled as a function of the volume flow of the extracted vapors.

Another object of the invention is to improve a method of operating a device for extracting cooking fumes.

• - Bereitstellung einer Vorrichtung zum Abzug von Kochdünsten gemäß der vorhergehenden Beschreibung,
• - Erzeugen eines Volumenstroms mit Wrasen mit Hilfe der Vorrichtung zum Abzug von Kochdünsten,
• - Behandlung der Wrasen mit Hilfe der Einrichtung zur Behandlung von Wrasen.

This task is solved by a procedure with the following steps:

• - Provision of a device for extracting cooking fumes as described above,
• - generating a volume flow with vapors using the device for extracting cooking vapors,
• - Treatment of the fumes with the help of the device for treatment of fumes.

With the help of the device for treating vapors, the moisture in the vapor flow can be reduced in particular. In particular, it can be reduced to the extent that it does not exceed a maximum specified limit value.

According to one aspect of the invention, the vapors are treated as a function of a sensor-detected parameter for determining the humidity of the vapors,

According to one aspect of the invention, provision is made for the addition of cooling fluid, in particular cooling liquid, in particular cooling water, to be controlled as a function of the humidity in the vapor flow, which can in particular be detected by sensors.

If the specified limit value is exceeded, a warning signal can be issued. If no other measures are available, a corresponding warning signal can be used by the user of the device to take alternative measures, for example interrupting the cooking process or supplying fresh air to the corresponding room.

Further, generally advantageous details of different aspects of the invention are described once again below.

The container of the device for treating vapors has in particular a trough for holding cooling liquid. The shape and size of the pan can be adapted in particular to the shape and size of the cooking appliance. The container is arranged in particular below the receiving space of the cooking appliance. In particular, it has a horizontal cross section which is at most as large as that of the receiving space of the cooking appliance. The cross-sectional area of the container is preferably at least half as large, in particular at least three-quarters as large as the cross-sectional area of the receiving space of the cooking appliance, in particular as the overall cross-section of the cooking appliance. A large area leads to a particularly effective reduction in temperature and/or moisture content of the vapors.

The inside of the container, in particular its bottom and/or walls, are designed in particular in such a way that dirt deposits are prevented. In particular, they can have a self-cleaning or an antibacterial coating.

The container preferably has the lowest possible overall height. The overall height of the container, in particular the mean distance between the bottom and the lid of the container, measured between their inner sides, is in particular at most 20 cm, in particular at most 10 cm, in particular at most 7 cm.

The container may have a sloping bottom. The inclination is in particular in the range from 1° to 10°, in particular up to 6°. In particular, the floor can be designed in such a way that it has a gradient, in particular a strictly monotonous gradient, to the lowest point of the container. A strictly monotonous gradient is understood here to mean that there is a path from any point in the container to the lowest point of the container, which is exclusively sloping. Liquid can thus flow from any point on the bottom of the tank to the lowest point of the tank.

Advantageously, one or more adjusting means, for example in the form of adjusting screws, can be provided on the container, by means of which the exact orientation of the container can be adjusted. This is particularly advantageous if a support surface on which the cooking appliance is mounted is not aligned perfectly horizontally.

One or more flow-guiding means can be provided in the container. In particular, flow-guiding means for the flow of cooling fluid can be provided in the base pan of the container. One or more flow-guiding means for the vapor flow can also be provided. Provision can in particular be made for the flow of vapor to be guided through the container along a meandering structure. As a result, the effective flow path of the vapors in the container can be increased.

According to a further aspect of the invention, the container can be designed in such a way that a free flow cross section increases from the vapor inlet to the vapor outlet. In particular, it can be provided that the vapor outlet has a larger flow cross section than the vapor inlet.

The container may be hermetically sealed to the outside except for the designated inlets and outlets.

The circulating pump for circulating the cooling fluid in the container can be part of a circuit with a circulating channel that is separate from the through-flow connection. The separate circulation channel can run at least partially outside the flow area, in particular outside the container. It can open into the container via a circulation channel outlet.

The cooling liquid can be pumped against the direction of flow by means of the circulation pump.

The circulating pump can have a maximum delivery rate of at least 2 l/min, in particular at least 3 l/min, in particular at least 4 l/min, in particular at least 5 l/min, in particular at least 8 l/min, in particular at least 12 l/min, in particular at least 15 rpm.

A water level sensor can be arranged in the container. The water level sensor is preferably arranged adjacent to the pump-out pump. It is preferably located adjacent to the lowest point of the container. The distance between the water level sensor and the pump or the lowest point of the container is in particular at most 10 cm, in particular at most 5 cm, in particular at most 3 cm. The water level sensor can be arranged in particular in a corner of the container.

With the help of the water level sensor, it can be ensured that the cooling liquid in the container has a specific, predetermined fill level during operation of the device, does not exceed it, or does not fall below it. The predetermined fill level can be at least 1 cm, for example, in particular at least 1.5 cm. For example, it can be at most 5 cm, in particular at most 3 cm, in particular at most 2 cm. In particular, it can be a maximum of 50% of the distance between the base pan of the container and its upper shell or the underside of the bottom cooling plate.

The total volume of cooling liquid in the container when it is filled to a predetermined level can be in the range from 0.5 l to 10 l, in particular in the range from 11 to 5 l, in particular at most 3 l. Deviating dimensions are possible, in particular depending on the maximum volume flow to be expected.

In order to reduce the required volume for a given filling height and cross-section of the container, liquid-displacing elevations, in particular in the form of embossing, can be provided on the container bottom.

The cooling liquid in the container has in particular a free surface area of at least 500 cm ² , in particular at least 700 cm ² , in particular at least 1000 cm ² . Deviating dimensions are possible, in particular depending on the maximum volume flow to be expected. For the largest possible reaction surface, it is advantageous to make the contact surface of the cooling liquid with the vapor flow as large as possible.

The container is made of a material, in particular plastic, which is temperature-resistant up to a temperature of at least 100°C, in particular at least 180°C, in particular at least 230°C, in particular at least 300°C.

The container is made of a material, in particular plastic, which is media-resistant, in particular acid-resistant and/or base-resistant.

• 1 eine schematische Schnittdarstellung durch ein Gargerät mit einer steuerbaren Lüftungseinrichtung in einem ersten Funktionsmodus,
• 2 eine Darstellung gemäß 1 in einem zweiten Funktionsmodus,
• 3 eine Darstellung gemäß 1 in einem dritten Funktionsmodus,
• 4 eine schematische, teilweise Seitenansicht eines in einem Gehäuse angeordneten Garraums und einer mit diesem Fluid leitend verbundenen Einrichtung zur Behandlung von Wrasen,
• 5 eine perspektivische Ansicht einer Einrichtung zur Behandlung von Wrasen gemäß 4,
• 6 eine Explosionsdarstellung der Einrichtung zur Behandlung von Wrasen gemäß 5,
• 7 eine Darstellung einer Bodenwanne der Einrichtung zur Behandlung von Wrasen gemäß 5,
• 8 eine Darstellung eines in der Einrichtung zur Behandlung von Wrasen angeordneten Kühlblechs,
• 9 eine Darstellung einer alternativen Ausführung einer Bodenwanne einer Einrichtung zur Behandlung von Wrasen,
• 10 eine Darstellung einer Deckels mit einer Meanderstruktur für eine Einrichtung zur Behandlung von Wrasen,
• 11 eine schematische Darstellung zur Erläuterung von Strömungswegen in einem Kühlfluid in der Bodenwanne einer Einrichtung zur Behandlung von Wrasen,
• 12 einen Querschnitt durch eine Einrichtung zur Behandlung von Wrasen,
• 13 eine schematische Darstellung zur Erläuterung der Funktionsweise einer Einrichtung zur Behandlung von Wrasen,
• 14 und 15 perspektivisch Ansichten eines Verbindungsstücks zur Verbindung eines Garraums des Gargeräts mit einer Einrichtung zur Behandlung von Wrasen,
• 16 eine schematische Schnittdarstellung eines als Montageeinheit ausgebildeten Kochfeldsystems mit einer Einrichtung zur Behandlung von Wrasen, und
• 17 eine schematische Darstellung einer Vorrichtung zum Abzug von Kochdünsten mit einer modular ausgebildeten Einrichtung zur Behandlung von Wrasen und einem Sockellüfter.

Further details and advantages of the invention result from the description of exemplary embodiments with reference to the figures. Show it:

• 1 a schematic sectional view through a cooking appliance with a controllable ventilation device in a first functional mode,
• 2 a representation according to 1 in a second functional mode,
• 3 a representation according to 1 in a third functional mode,
• 4 a schematic, partial side view of a cooking chamber arranged in a housing and a device for treating vapors that is conductively connected to this fluid,
• 5 a perspective view of a device for treating vapors according to FIG 4 ,
• 6 according to an exploded view of the device for the treatment of vapors 5 ,
• 7 a representation of a floor pan according to the device for the treatment of vapors 5 ,
• 8th a representation of a cooling plate arranged in the device for treating vapors,
• 9 a representation of an alternative embodiment of a floor pan of a device for the treatment of vapors,
• 10 a representation of a cover with a meander structure for a device for treating vapors,
• 11 a schematic representation to explain flow paths in a cooling fluid in the floor pan of a device for treating vapors,
• 12 a cross section through a device for the treatment of vapors,
• 13 a schematic representation to explain the functioning of a device for the treatment of vapors,
• 14 and 15 perspective views of a connector for connecting a cooking chamber of the cooking appliance to a device for treating vapors,
• 16 a schematic sectional view of a cooktop system designed as an assembly unit with a device for treating vapors, and
• 17 a schematic representation of a device for extracting cooking vapors with a modular device for the treatment of vapors and a base fan.

In the following, a possible structure and components of the device for heating food to be cooked are first described as an example. It is therefore referred to as cooking appliance 1 below. In particular, it can be a non-pressurized cooking appliance. In particular, it can be an oven, a steamer, a combi-steamer, ie an oven with a steamer function, a microwave oven or a combination appliance with a selection from the aforementioned functions.

The cooking appliance 1 has a housing 2 . The housing 2 surrounds a receiving space 3 for receiving the food to be cooked. The receiving space 3 is also referred to as the cooking space.

The housing 2 can be essentially cuboid. In particular, it can have a front side 4 and a back side 5 . In particular, it has a bottom 6 and a top 7 . It also has side walls.

The housing 2 has, in particular, a closable opening 8 for loading the receiving space 3 with food to be cooked. The opening 8 can be closed by means of a closure element, in particular in the form of a door 9 . The door 9 is in particular a hinged door. In particular, the door can be pivoted about a pivot axis 10 . When the door 9 is in the closed state, the pivot axis 10 is preferably in the lower region thereof. Alternative arrangements of the door 9 and alternative configurations of the closure element are possible.

In addition to and separately from the opening 8 for loading the receiving space 3 with food to be cooked, the housing 2 has a fresh air inlet 11 and an exhaust air outlet 12 .

The fresh air inlet 11 is preferably arranged in the area of the front side 4 of the housing 2 .

The exhaust air outlet 12 is preferably located in the area of the rear 5 or in the area of a side wall of the housing 2.

The cooking appliance 1 also includes a heating device 13, which is shown only schematically in the figures. The heating device 13 serves for the direct or indirect transfer of thermal energy to the food to be cooked. The heating device 13 can have one or more heating elements. The heating elements can be arranged inside the receiving space 3 or outside the same. Corresponding alternatives are known from the prior art, for example from DE 101 58 425 C1 , famous.

The cooking appliance 1 has a means for generating a circulating air flow in the receiving space 3 . This means for generating a circulating air flow is shown schematically as a fan wheel 14 in the figures. It can preferably be arranged in the area of the back of the receiving space 3 .

In addition, the cooking appliance 1 includes a ventilation device. The ventilation device can have several functions. On the one hand, it can be used to generate an air flow to cool certain components of the cooking appliance 1 . On the other hand, it can serve to control the ventilation of the receiving space 3 . According to the invention, these functions can be implemented using a single ventilation device. According to an alternative not shown in the figures, it is also possible to provide at least partially separate ventilation devices for the different functions.

The ventilation device comprises at least one fan 15, shown only schematically in the figures. A radial fan is preferably used as the fan. As an alternative to this, an axial or a cross-flow fan can also serve as the fan. A combination of different fans is also possible. In particular, the ventilation device can comprise a single fan 15 or a single fan unit with one or more fans. For example, it is possible to arrange several fans next to each other in a single fan unit. As a result, the installation space required for the fan unit, in particular the installation height, can be reduced. In addition, such a fan unit can be controlled particularly flexibly.

The fan 15 is preferably arranged in the area of the exhaust air outlet 12 .

The fan 15 is used to generate a volume flow V° (here V° denotes the volume flow dV/dt. The volume flow V° that can be generated by means of the fan 15 is in the range of up to 50 m ³ /h, in particular in the range of up to 100 m ³ /h, in particular in the range of up to 200 m ³ /h, in particular in the range of up to 300 m ³ /h, in particular in the range of up to 500 m ³ /h.

The ventilation device also includes a flow control system 16. The flow control system 16 includes a first subsystem for guiding a flow of cooling air 17. The cooling air 17 is formed in particular by fresh air sucked into the housing 2 through the fresh air inlet 11.

The cooling air 17 is guided through the flow control system 16 in a meandering manner. In particular, starting from the fresh air inlet 11 , it is first guided from the front side 4 of the housing 2 along the upper side of the receiving space 3 into the rear area of the housing 2 . It is then deflected and guided back into the area of the front side 4 of the housing 2 . There it is deflected again and guided to the exhaust air outlet 12 on the rear side 5 of the housing 2 . A larger number of deflections, in particular a larger number of meander loops, is also possible.

The cooling air 17 is guided into the flow control system 16 in particular from the front. The exhaust air 18 is guided into the flow control system 16 in particular from behind.

In order to minimize the pressure loss in the flow control system 16, as few deflections as possible are preferably provided and the flow paths are designed to be as short as possible.

The flow of cooling air is shown schematically in the figures by solid arrows.

The flow control system 16 also includes a subsystem for guiding a flow of exhaust air 18 sucked out of the receiving space 3. The exhaust air flow is shown schematically in the figures by dashed arrows.

The cooling air 17 sucked in through the fresh air inlet 11 can be fed via a feed opening 33 to the area of the flow control system 16 with the flow of the extracted exhaust air 18 .

The flow control system 16 thus serves to guide the air flow with the fresh air sucked into the housing 2 and/or to guide the air flow with the exhaust air 18 sucked out of the receiving space 3.

The two subsystems partially overlap. In particular, provision is made for the air flow with the cooling air 17 to be supplied in a controlled manner to the air flow of the exhaust air 18 sucked out of the receiving space 3 .

In order to control the air flows in the housing 2 , the ventilation device has a control means for controlling the extraction of the exhaust air 18 from the receiving space 3 . In particular, a controllable valve 19 can serve as a control means for controlling the extraction of the exhaust air 18 from the receiving space 3 . The valve 19 is arranged in the area of a fluid outlet 20 in the bottom of the receiving space 3 .

Downstream from the fluid outlet 20 there is a device for condensing water vapor contained in the exhaust air sucked out of the receiving space 3 . The condensation device 28 can comprise a channel system with meandering channels. Cooling water 29 can be arranged in the channel system. A fresh water inlet 30 is used to fill the condensation device 28 with cooling water 29. A waste water line 31 is used to empty the condensation device 28. The condensation device 28 generally forms a device 40 for treating vapors.

The fresh water inlet 30 and the waste water line 31 are shown only schematically in the figures. They are collectively referred to as the hard water connection. The fixed water connection can also be used to clean the receiving space 3. The cooking appliance 1 can have a special cleaning program for this purpose. Automated cleaning of the receiving space 3 is thus possible.

For details of the condenser 28 is an example on the DE 10 2008 012 961 A1 referred.

The control means for controlling the extraction of the exhaust air 18 from the receiving space 3 is connected to a central control device 21 in a signal-transmitting manner. The central control device 21 is arranged in an encapsulated electronics housing 22 . The electronics housing 22 is designed to be encapsulated, in particular liquid-tight, in particular vapor-tight. The electronics housing 22 is arranged in particular in the flow control system 16 , in particular in the subsystem for guiding the cooling air 17 . The cooling air 17 is thus used to cool the electronics housing 22, in particular the electrical and/or electronic components arranged therein. All electrical and electronic components for controlling the cooking appliance 1 can be arranged in the electronics housing 22 .

As shown in the figures, the electronics housing 22 can be arranged above the receiving space 3 , in particular in the area of the upper side 7 of the housing 2 . As an alternative to this, it is possible to arrange the electronics housing 22 on the side, behind or below the receiving space 3 , in particular in the area of the bottom 6 of the housing 2 . In this way, improved protection against overheating of the electrical and/or electronic components can be achieved.

The ventilation device also includes a control means for controlling the supply of fresh air to the accommodation space 3. A ventilation flap 23 or a valve or a control element in general, in particular a controllable control element, serves as control means for controlling the supply of fresh air to the accommodation space 3.

A fresh air opening 11 through which fresh air can be supplied to the receiving space 3 can be closed with the aid of the ventilation flap 23 . Fresh air can be supplied to the receiving space 3 from the rear of the device. The fresh air supplied to the receiving space 3 can in particular be supplied unguided from the rear of the device. In particular, it can be supplied via a flow path which is not in flow connection with the fresh air inlet 11 . The fresh air supplied to the receiving space 3 is, in particular, independent of the cooling air 17 sucked in through the fresh air inlet 11.

The control means for controlling the supply of fresh air to the receiving space 3 is connected to the central control device 21 in a signal-transmitting manner.

The control means for controlling the supply of fresh air to the receiving space 3 is arranged, for example, in the area of the rear of the receiving space 3 . Other arrangements are also possible.

In addition, the ventilation device comprises at least one control means for controlling the supply of the air flow of the cooling air 17 sucked into the housing 2 to the air flow of the exhaust air 18 sucked out of the receiving space 3. This control means is preferably designed as an adjustable flap 24. It can also be designed as a valve, in particular as a multi-way valve, in particular with at least two inlets and one outlet.

The closure flap 24 is connected to the central control device 21 in a signal-transmitting manner.

All control means of the ventilation device are preferably coupled to one another directly or indirectly. They are preferably all connected to the central control device 21 in a signal-transmitting manner.

In addition, the cooking appliance 1, in particular the ventilation device, includes a means for cleaning exhaust air. A filter module 25 serves as a means for cleaning exhaust air. The filter module 25 comprises in particular an odor filter. In particular, it includes an activated carbon filter. It can also include a grease filter and/or other filters. The filter module 25 is arranged in particular in the area of the front side 4 of the cooking appliance 1 . In particular, it is arranged behind a removable front panel 26 .

The filter module 25 can preferably be removed from the housing 2 . In particular, it is interchangeable. In particular, the filter module 25 can be removed from the housing 2 without tools. This makes it easier to replace the filter module 25.

The filter module 25 is arranged in the flow control system 16 in such a way that both the exhaust air 18 and the cooling air 17 flow through it.

The filter module 25 is arranged in front of the electronics housing 22 in the direction of flow. The electronics housing 22 is thus surrounded by cleaned air when the cooking appliance 1 is in operation, in particular when the ventilation device is in operation.

The filter module 25 is in particular in the direction of flow before the fan 15, d. H. in the vacuum area of the fan 15 arranged. The fan 15 is thus subjected to cleaned air during operation of the ventilation device.

A sensor device 35 for detecting the temperature and/or humidity of the volume flow V° generated by the fan 15 can be arranged in the flow control system 16 . The sensor device 35 is arranged, for example, in the area of the filter module 25 . It can also be arranged in the area of the electronics housing 22 or in the area of the fan 15 . It is preferably arranged upstream of the fan 15 .

The sensor device 35 is preferably arranged downstream of the feed opening 33, in particular at a distance from it.

The details of the ventilation device and in particular the details of the filter module 25 are advantageous independently of the other details of the cooking appliance 1 and, taken by themselves, lead to an improvement in a device for heating food to be cooked.

In particular, the front panel 26 can have a display and/or an operating device with one or more operating elements. This can in particular be a touch-sensitive display (touch display).

In particular, the display can have a very heavily tinted front glass (black panel effect). In this way it can be achieved that contours between a display, adjacent functional components such as capacitive buttons and a housing or blocking print are not visible.

The cooking appliance 1 also includes a sensor device 27 arranged in the receiving space 3. The sensor device 27 includes at least one sensor for detecting the temperature and/or the humidity in the receiving space 3. The sensor device 27 is connected to the central control device 21 in a signal-transmitting manner. With the aid of the sensor device 27, feedback control of the control means of the ventilation device, in particular the ventilation flap 23 and/or the valve 19 and/or the flap 24, is possible.

In addition, the cooking appliance 1 has a device 32 , also shown only schematically, for controlling the humidity in the receiving space 3 . The device 32 for controlling the humidity in the receiving space 3 is preferably connected to the mains water connection.

Details of the device 40 for treating vapors, their arrangement in the cooking appliance 1 and their mode of operation are described below. The details of the device 40 for treating vapors can be independent of the other details of the cooking appliance and can be used to advantage.

The device 40 for treating vapors can interact with other components of the cooking appliance 1, in particular the ventilation device and/or the filter device with the filter module 25.

The device 40 for treating vapors has a fluid-tight container with a vapor inlet 41 and a vapor outlet 42 .

The container has a base pan 43 . The floor pan 43 serves to hold cooling liquid, in particular in the form of cooling water.

The container has a lid 44 .

The cover 44 can be detachably connected to the base pan 43 . In particular, it can be latched to the floor pan 43 . For this purpose, latching means, in particular in the form of latching tabs 45 with latching lugs and recesses 46 interacting therewith, are provided on the floor pan 43 and on the cover 44 .

The latching means can be arranged circumferentially on the floor pan 43 and on the cover 44 .

Other types of connection are also possible. For example, the cover 44 can also be screwed to the floor pan 43 . A detachable connection between the lid 44 and the base pan 43 leads to advantages with regard to cleaning the container and/or in the event of repairs.

The cover 44 and/or the floor pan 43 can be profiled. In particular, they can be provided with stiffening struts 59 .

The stiffening struts 59 can form a hexagonal pattern, for example. In particular, the flexural rigidity of the cover 44 and/or the bottom area of the floor pan 43 can be increased with the aid of the stiffening struts 59 .

The base pan 43 and/or the cover 44 are made of a fluid-tight material. In particular, they are made of a heat-resistant material. The material of the floor pan 43 and/or the cover 44 is heat-resistant in particular up to temperatures of at least 100°C, in particular at least 200°C, in particular at least 300°C.

The base pan 43 and/or the cover 44 are preferably made of a rustproof material. They are preferably made of an acid-resistant and/or alkali-resistant material.

The floor pan 43 and/or the cover 44 can be made of plastic or metal, in particular stainless steel, at least in certain areas, in particular completely.

Preferably, the base pan 43 and the cover 44 are made of the same material. In this way it can be achieved that they do not become leaky due to different coefficients of thermal expansion when the cooking appliance 1 is in operation.

The cover 44 can be at least partially, in particular completely made of the same material as the receiving space 3 of the cooking appliance 1, in particular its bottom wall. The cover 44 can also be made of a different material than that on the bottom wall of the receiving space 3.

The container is arranged below the receiving space 3 . The receiving space 3 is fluidly connected to the vapor inlet 41 via the fluid outlet 20 . A connecting piece 47 is provided for the connection between the receiving space 3 and the container of the device 40 for treating vapors.

There is a distance between the container of the device 40, in particular the cover 44 thereof, and the receiving space 3, in particular its bottom. This can be at least partially filled with a heat-insulating material. Air can also serve as heat-insulating material.

The receiving space 3 has a floor which slopes downward towards the fluid outlet 20 . The bottom of the receiving space 3 can in particular be designed to slope down towards the fluid outlet 20 in some areas. It can also be designed horizontally in some areas. The fluid outlet 20 is preferably arranged at the lowest point of the receiving space 3 .

The connecting piece 47 has a tubular section 48 . A screen 49 is arranged on the tubular section 48 . The screen 49 can in particular be arranged at the end on the tubular section 48 . The sieve 49 can in particular be designed in one piece with the tubular section 48 .

The screen 49 is integrated into the connector 47 .

The connecting piece 47 has a peripheral collar 50 . The collar 50 forms a contact shoulder, which rests against the bottom of the receiving space 3 when the connecting piece 47 is arranged in the cooking appliance 1 .

A sealing element, in particular in the form of a sealing ring 51 , is provided between the collar 50 and the bottom of the receiving space 3 . The sealing ring 51 is compressible. It seals the connection between the connecting piece 47 and the receiving space 3 .

The connecting piece 47 has latching means 52 . The locking means 52 are distributed over the outer circumference of the tubular section 48, in particular evenly distributed. The latching means 52 can form a bayonet catch. They interact with countermeasures provided for this purpose on the floor of the receiving space 3 .

The screen 49 has several slots. The screen 49 may have a hole in the middle. The collar 50 can be formed by an overhanging edge of the screen 49 .

The connecting piece 47 consists of plastic, in particular heat-resistant plastic. It consists at least partially of heat-resistant plastic. It can also consist of metal, at least in certain areas.

The connecting piece 47 is preferably formed in one piece. However, a multi-part design is possible.

The tubular section 48 is in particular in the form of a circular cylinder. It has an outer diameter which is adapted to the inner diameter of the vapor inlet 41 .

A seal, in particular in the form of a sealing ring 53 , is provided between the tubular section 48 and the vapor inlet 41 .

The sealing ring 53 is integrated in particular in the container of the device 40 for treating vapors. In particular, it can be integrated into the cover 44 . The sealing ring 53 enables a sealed connection between the connecting piece 47 and the container of the device 40 for treating vapors. The sealing ring 53 encloses the tubular section 48 tightly, in particular in a fluid-tight manner.

The tubular section 48 can be inserted into the container through the vapor inlet 41 . It enables a floating connection between the container of the device 40 and the receiving space 3.

The connecting piece 47 leads to an alignment of the container of the device 40 relative to the receiving space 3.

The connecting piece 47 has only a small contact area with the receiving space 3 . It can therefore lead to thermal decoupling between the receiving space 3 of the cooking appliance 1 and the container of the device 40 .

The connecting piece 47 can be removed from the inside of the receiving space 3 . In particular, it can be removed without tools. According to a variant, special tools are required to remove the connector 47 .

The sieve 49 sits in the fluid outlet 20 of the receiving space 3.

The connecting piece 47, in particular the seal against the receiving space 3 and against the container of the device 40, can prevent liquid or vapors from the receiving space 3 or from the device 40 for treating vapors from entering undesired areas of the cooking appliance 1. This can in particular prevent the cooking appliance 1 from being damaged.

The connecting piece 47 serves in particular to at least partially, in particular completely, compensate for a temperature-dependent linear expansion of the receiving space 3 . This ensures that the connection from the receiving space 3 to the container of the device 40 is always fluid-tight to the outside. According to a variant that is not shown, one or more flexible means or areas can also be provided for this purpose in the connecting element between the receiving space 3 and the device 40 and/or in the area of its arrangement in the receiving space 3 .

The fluid outlet 20 can be arranged in the front half, in particular in the front third, of the receiving space 3 . In particular, it is arranged centrally between the side walls of the receiving space 3 . This is not mandatory. It can also be arranged in the receiving space 3 at the edge.

The vapor inlet 41 is arranged directly below the fluid outlet 20 . The vapor inlet 41 is arranged in alignment with the fluid outlet 20 in particular in the vertical direction.

The positioning of the fluid outlet 20 in the receiving space 3 can therefore influence the arrangement of the vapor inlet 41 in the cover 44 of the device 40 . As a result, the flow path extending from the vapor inlet 41 to the vapor outlet 42 can be influenced.

Between the floor pan 43 and the cover 44 there is a through-flow connection which fluidly connects the fume inlet 41 to the fume outlet 42 along a direction of flow.

The container, in particular the floor pan 43, has rounded edges.

The vapor outlet 42 protrudes upwards over the vapor inlet 41 .

The vapor outlet 42 serves as a connection for a riser pipe 54.

The device 40 is coupled to the fan device of the cooking appliance 1 via the riser pipe 54 . The riser pipe 54 is in particular a component of the flow control system 16. A sensor device 55 with one or more sensors for detecting one or more parameters of the vapor flow can be arranged in the riser pipe 54.

The sensor device 55 can in particular have one or more temperature sensors, one or more moisture sensors, one or more conductivity sensors, one or more volume flow sensors and/or other sensors.

In particular, electrical, mechanical, chemical or optical sensors can be used as sensors.

The sensor device 55 is connected in a signal-transmitting manner to a control device (not shown in the figures) for controlling the device 40 for treating vapors and/or for controlling the ventilation device of the cooking appliance 1 and/or for controlling the heating device 13 of the cooking appliance 1 .

The fluid outlet 20 can be arranged in a lowered area of the receiving space 3 . The lowered area can in particular be designed in the shape of a truncated pyramid. This requires the deck surface of the truncated pyramid, which is formed by the bottom wall of the receiving space 3, does not necessarily run parallel to the base surface, which is only formed geometrically, but not by a material component. The top surface, in particular the bottom of the receiving space 3 , can in particular be sloping at least in sections, in particular sloping down towards the fluid outlet 20 .

The recess in the bottom of the receiving space 3 can be covered by a cooking space sieve. The cooking chamber sieve can in particular be arranged in the receiving space 3 in such a way that it is flush with the remaining area of the floor of the receiving space 3 and forms a substantially flat floor surface. The cooking compartment sieve holds back leftover food. It can prevent vortex formation.

The cooking space sieve can be removed freely. This makes it easier to clean. It can be lifted in particular by sideways pushing on one side on the other. This can make it easier to remove.

The cooking chamber sieve can be rectangular. It can also be non-rectangular trapezoidal. In this way, a predetermined, unambiguous alignment of the cooking chamber sieve in the floor of the receiving chamber 3 can be ensured.

The cooking chamber sieve can be dimensioned in such a way that its longest side is at least half the size of the free width of the receiving space 3. The longest side of the cooking chamber sieve is in particular at least as large as 60%, in particular 70%, in particular 80%, in particular 90% of the free width of the receiving space 3. In the direction perpendicular thereto, the cooking space sieve extends at least 5 cm, in particular at least 10 cm, in particular at least 15 cm, in particular at least 20 cm.

A resulting large screen area has proven to be particularly advantageous. It leads to a reduction in flow losses. In addition, the sieve does not clog as quickly.

The cooking space sieve can be fixed to the bottom of the receiving space. One or more fixing means, for example screws or magnets, can be provided for this purpose.

A cooling plate 56 is arranged between the floor pan 43 and the cover 44 . The cooling plate 56 is arranged completely in the interior of the container, in particular completely in the floor pan 43 . It can be jammed between the floor pan 43 and the cover 44 .

The cooling plate 56 has an outer circumference which, at least in sections, is adapted to an inner circumference of the floor pan 43 . The cooling plate 56 can rest in particular on the edge on a bearing edge formed in the floor pan 43 .

The cooling plate 56 is designed like a trough. It has a peripheral overflow edge 57 .

How from the 8th can be seen as an example, the cooling plate 56 can have two drain openings 75 . In general, the cooling plate 56 has at least one drain opening 75 for draining cooling liquid.

A receptacle 77 for receiving the fresh water inlet 65 can be provided on the cooling plate 56 .

The drainage openings 75 can be arranged adjacent to the recess 58 for the passage of the connecting piece 47 .

The recesses 58 can form overflow openings.

The cooling plate 56 is flat in some areas. The individual areas of the cooling plate 56 can be formed obliquely, in particular sloping, and/or can be arranged in the floor pan 43 . As a result, a defined drainage direction for the cooling water applied to the cooling plate 56 can be achieved.

Defined kinks 78 can be provided in the cooling plate 56 . The cooling plate 56 can in particular be cambered. This allows a defined direction of expansion in the event of thermal expansion be specified. In this way it can be ensured that an expansion of the cooling plate 56 does not lead to damage to the floor pan 43 or the cover 44 .

A cutout 58 for the passage of the connecting piece 47 is provided in the cooling plate 56 . The sealing ring 53 preferably engages in the recess 58 . The passage of the connecting piece 57 through the recess 58 can be sealed off by means of the sealing ring 53 .

As an alternative to this, the recess 58 can also be used to drain cooling water from the cooling plate 56 into the floor pan 43 .

A circulating pump 60 is arranged in the container of the device 40 . The circulation pump 60 serves to circulate cooling liquid in the container, in particular in the floor pan 43. It generally provides a means for mixing cooling fluid in the container.

The circulation pump 60 can be arranged in a receptacle provided for this purpose in the cover 44 . It preferably has an intake area which is arranged in a pump sump 61 formed in the floor pan 43 .

The pump sump 61 is located in an area 62 that is lower than the remaining area of the floor pan 43 . The pump sump 61 can also be formed by the lowered area 62 .

The floor pan 43 can have a floor area 66 sloping towards the lowered area 62 . This is for example from the 4 apparent. In the 7 gradient lines 67 are drawn in as an example.

The base pan 43 can be designed to slope, in particular monotonously, from the area in which cooling liquid from the cooling plate 56 passes through the drain openings 75 into the base pan 43 to the lowered area 62 .

The circulation pump 60 has an outlet which leads into the floor pan 43 . In this case, the outlet of the circulation pump 60 can open directly into the floor pan 43 or can be routed to a specific area of the floor pan 43 via a fluid line, in particular in the form of a hose or a pipe. The fluid line from the circulating pump 60 back to the floor pan 43 can be routed outside the container of the device 40 in some areas.

Flow-guiding elements, for example one or more valves, in particular multi-way valves, can be arranged in the return line from the circulation pump 60 to the floor pan 43 . These are preferably connected to a control device. This makes it possible to control the circulation circuit. In particular, it is possible to form more than one flow path for the circulation circuit.

The cooking appliance 1 can in particular have a plurality of circulation circuits with different flow paths. A first flow path can run completely inside the container 40, for example. An alternative flow path can include a flow arm outside the container, but no flow area in the receiving space 3. Additives, for example fresh water, cleaning agents, in particular antibacterial agents, or other additives can be added to the circulating liquid in a targeted manner via the flow arm outside the container. Preferably, the flow path of the recirculation circuit can be controlled.

In addition to the container of the device 40 , another circulation circuit can include the receiving space 3 of the cooking appliance 1 . This circuit can be used to clean the receiving space 3 . A corresponding circuit can be used in particular for the targeted cleaning of the device 40 for treating vapors, in particular the container of the same, in particular the floor pan 43 and/or the cover 44 and/or the cooling plate 56 . At the same time, the device 40 for treating vapors, in particular the container thereof, can be cleaned.

The device 40 can have a pump 63 for pumping a fluid, in particular cooling water and/or service water, out of the floor pan 43 .

The device 40 can in particular have a first pump in the form of the circulation pump 60 and a second pump in the form of the pump 63 .

The two pumps 60, 63 can be arranged side by side.

The two pumps 60, 63 can be essentially identical.

Instead of two pumps 60, 63, a single pump and a suitable actuator can also be provided. In particular, the pump can switch between a circulation mode and a pump-out mode. This can also be achieved in particular via different positions of the actuator.

The pump 63 can be arranged in a receptacle provided for this purpose in the cover 44 . It preferably has an intake area which is arranged in a pump sump 61 formed in the floor pan 43 . The pump sump 61 of the pump 63 is preferably arranged at the lowest point of the floor pan 43 and/or forms the lowest point of the same.

One or more adjusting means, in particular in the form of adjusting screws, can be provided for aligning the floor pan 43 . In this way, precise alignment of the floor pan 43 can be facilitated. In this way, in particular, a precise alignment of the floor pan 43 can be ensured independently of the specific circumstances of the intended set-up or installation location for the cooking appliance 1 . With the aid of the adjustment means, a targeted alignment of the floor pan 43 is possible, even if the cooking appliance 1 is to be set up on an installation surface that is not perfectly horizontally aligned.

A filling level sensor 64 can be arranged in the container of the device 40 . The filling level sensor 64 is connected in a signal-transmitting manner to a control device for controlling the supply and/or discharge of cooling fluid to the container. The level sensor 64 can also be connected to the central control device 21 of the cooking appliance 1 in a signal-transmitting manner.

The device 40 has a fixed water connection. The fixed water connection can be used to supply cooling fluid, in particular in the form of fresh water, to the container.

Cooling fluid, in particular in the form of fresh water, can be supplied to the device 40 for example via the circulation circuit with the circulation pump 60 and/or a specific fresh water inlet 65 . In principle, it is also possible to supply fresh water via the vapor inlet 41 .

In particular, fresh water can be applied to the cooling plate 56 via the fresh water inlet 65 . The fresh water can in particular form a cooling medium for cooling the cooling plate 56 .

It can be provided that the temperature of the cooling plate 56 is recorded by means of one or more sensors. These sensors can be connected in a signal-transmitting manner to a control device for controlling the addition of fresh water to the cooling plate 56 . In particular, provision can be made for the addition of fresh water to the cooling plate 56 to be sensor-controlled. The addition can take place in particular as a function of a temperature of the cooling plate 56 . For the addition of cooling water to the cooling plate 56, other parameters, for example the humidity of the vapors sucked off and/or the volume flow and/or the functional mode of the fan device, can also be taken into account.

The bottom area 66 can be flat. According to one in which 9 In the variant shown as an example, the base area 66 has elevations 68 . Such elevations 68 can be used to reduce the volume of liquid in the base pan 43 at a given filling level.

According to the in the 6 and 7 illustrated variant, the base area 66 is flat, in particular free of flow-guiding elements.

As exemplified in the 9 is shown, provision can be made for subdividing the floor pan 43, in particular starting from the floor area 66, into a plurality of sub-areas 66 ₁ , 66 ₂ . The partial areas can be separated from one another by flow-guiding means, in particular in the form of partition walls 69 .

The partition walls 69 can be designed in such a way that mixing of cooling liquid from different partial regions 66 _i , 66 _j with i≠j is only reduced or completely prevented.

In general, the mixing of the cooling fluid is more complete within a specific partial area 66 _i than between two different partial areas 66 _i , 66 _j with i≢j.

In particular, when the floor pan 43 is subdivided into separate partial areas 66 _i with i=1 . . . n; 2≦n, in particular n≦10, in particular n≦5, in particular n≦3, multi-stage cooling of the extracted vapors can be achieved. In particular, it is possible to control the temperature of the cooling water in the different areas 66 _i separately. Provision can be made here to keep the cooling water in the sub-area 66 ₂ which is closest to the vapor outlet 42 in a lower temperature range than the cooling water in the other sub-areas 66i, i ≢ 2, in particular in the sub-area 66 ₁ , which is at the closest to vapor inlet 41 is.

Like in the 10 is shown as an example, a meandering structure can be provided in the container of the device 40 for specifying a meandering flow path of the vapors through the container.

The meandering structure is formed in particular by flow-guiding means inserted into the container, in particular in the form of flow-guiding walls 70 . A flow baffle 70 can be used to increase the length of the flow path of the extracted vapors in the container.

Like in the 10 is shown as an example, the flow guide walls 70 can be arranged on the lid 44 of the container. In particular, they can be formed in one piece with the lid 44 of the container or connected to it. This is possible in particular for a variant in which the cooling plate 56 is omitted. In a variant with a cooling plate 56, the flow guide wall 70 is in particular also below the cooling plate 56, ie in the region between the cooling plate 56 and the floor pan 43, is formed.

The flow guide wall 70 preferably does not extend as far as the base area 66 of the base pan 43. It is in particular spaced apart from the base area 66 of the base pan 43. The distance between the flow guide wall 70 and the base region 66 of the base trough 43 is preferably less than a fill level of the base trough 43 with coolant provided for the operation of the device 40 . The flow guide wall 70 is in particular designed in such a way that it dips into the cooling liquid, in particular in the area of a free edge, when the device 40 is in operation, in particular if it is filled with cooling liquid up to a predetermined filling level. Below the flow guide wall 70, the cooling liquid can preferably circulate in the floor pan, in particular in its floor area 66 or, in the case of a plurality of sub-areas 66 _i , in this.

In the 11 the flow path of a circulation flow 71 of the coolant in the floor pan 43 is shown schematically.

Furthermore, in the 11 The flow path of an external flow arm 72 from the circulation pump 60 back to the floor pan 43 is shown schematically. In addition, a flow path 73 to the pump 63 and from there to a waste water line 74 is shown schematically.

Like in the 11 is shown schematically, the floor pan 43 is preferably formed free of dead zones. In particular, complete mixing of the cooling liquid in the floor pan 43 can be achieved with the aid of the circulation pump 60 .

In the following, the functioning of the device 40 is based on the schematic 13 described. When the cooking appliance 1 is in operation, vapors arising in the receiving space 3 can escape from the receiving space 3 via the fluid outlet 20 . They reach the container of the device 40 for the treatment of vapors via the vapor inlet 41 .

The vapors can be sucked out of the receiving space 3 in particular by means of the ventilation device, in particular by means of the fan 15 . The device 40 is arranged in particular in the negative pressure area of the ventilation device.

In the device 40, the vapors flow along a predetermined flow path from the vapor inlet 41 to the vapor outlet 42.

The vapors flow along a flow path between the floor pan 43 and the cover 44. They flow in particular between the floor pan 43 and the cooling plate 56.

When the device 40 is in operation, the floor pan 43 is filled with cooling liquid, in particular in the form of cooling water, to a predetermined filling level. The coolant forms a surface 76 that acts as a cooling element. The cooling liquid in the floor pan 43 forms in particular a layer or layer with cooling liquid.

In addition, cooling liquid, in particular in the form of fresh water, is added to the container via the fresh water inlet 65 . In particular, cooling water can be applied to the cooling plate 56 through the fresh water inlet 65 . The cooling plate 56 is thereby cooled. In particular, it forms part of a heat exchanger. The cooling liquid forms a further layer or layer on the cooling plate 56 . The vapors are thus passed through in the device 40 between two plies or layers with liquid. This leads to a condensation of vapors on the surface 76 of the cooling liquid in the floor pan 43. There is also a condensation of vapors on the underside of the cooling plate 56. Heat and moisture in particular are extracted from the vapors as they flow through the device 40. Excess cooling liquid can drip off the cooling plate 56 into the floor pan 43 .

The fill level of the floor pan 43 with coolant can be monitored using the fill level sensor 64 . If a predetermined fill level is exceeded, excess cooling liquid can be pumped out of the floor pan 43 by means of the pump 63 .

Provision can also be made to add cooling liquid to the floor pan 43 or to pump it out of it, depending on the functional modes of the cooking appliance 1 . Regarding the different functional modes of the cooking appliance 1 is on the PCT/EP2020/060 413 referred. Provision can be made, in particular, for the cooling liquid to be pumped out of the floor pan 43 at least partially, in particular completely, for the rapid suction of vapors from the receiving space 3 .

In particular, it can be provided that the filling level of the cooling liquid in the floor pan 43 is set as a function of the functional mode of the cooking appliance 1, in particular as a function of the volume flow generated by the fan 15. The filling level of the cooling liquid in the floor pan 43 can be adjusted by means of the filling level sensor 64 .

The addition of the cooling liquid and/or its circulation in the floor pan 43 can preferably take place in a controlled manner. The addition of cooling liquid, in particular through the fresh water inlet 65, can in particular take place in cycles.

The device 40 for treating vapors can in particular have different operating modes which differ with regard to timing of the addition of cooling liquid to the container. An exemplary overview of different operating modes of the device 40 for treating vapors is summarized in the table below.

Overview of operating modes

Mode : 0 Explanation : switched off goal Operating behavior device : Clock fresh water*: pause, no filling 1 Standard mode for high temperature ranges (> 170°C) Maintain temperature at riser pipe eg: 230° cooking with the maximum load in the cooking compartment Fresh water lOsec Pause 50 sec 1:10 to 1:3 2 Standard mode for medium temperature ranges (e.g. 110°C to 170°C) Maintain temperature at riser pipe eg: 130° gentle preparation Fresh water 5s break 55s 1:30 to 1:10 3 Cooling mode 1 if the outlet temperature in the riser pipe is too high Lower the temperature at the riser pipe e.g.: 230° cooking --> swinging/overshooting with heating control (ambient temperature too high) Fresh water 20s break 40s 1:1 to 1:3 4 Cooling mode 2 when the outlet temperature in the riser pipe is significantly too high Device damage prevention eg: 230° cooking with error in device control --> overheating 300°++ Fresh water 5s Pause 5s ≥ 1:1 5 Minimum consumption mode reduce water consumption eg 80° steaming Fresh water 2.5 sec break 57.5 sec ≤ 1:30 6 zero consumption mode Little/no water consumption eg 50° steaming Initial filling 2 L refill every 30 min * exemplary values

The addition of fresh water can be in the range from 100 ml/min to 10 l/min. In particular, it can be in the range from 1 l/min to 5 l/min.

The maximum water consumption with an uninterrupted addition of fresh water is in particular in the range from 50 l/h to 500 l/h, in particular in the range from 70 l/h to 200 l/h.

A method for cleaning the receiving space 3 and/or the device 40 for treating vapors is described below by way of example and in brief.

A cleaning unit with a cleaning agent, in particular several cleaning agents, can be arranged in the receiving space 3 for cleaning. The cleaning unit can be designed as a cartridge. For details refer to the DE 10 2020 204 707.3 referred, which is hereby fully integrated into the present application.

1. 1. Ca. 10 min Wasser vom Behälter der Einrichtung 40 zum Garraum 3 umwälzen, dabei auf ca. 50°C erwärmen und im warmen Zustand umwälzen. Das dient zum Fett/Verschmutzungen lösen.
2. 2. Schmutzwasser abpumpen, Behälter der Einrichtung 40 mit Frischwasser befüllen.
3. 3. Frischwasser kurz über den Garraum 3 umwälzen.
4. 4. Nochmal Schmutzwasser abpumpen, Behälter der Einrichtung 40 mit Frischwasser befüllen.
5. 5. Wasser vom Behälter der Einrichtung 40 zum Garraum 3 umwälzen, dabei auf ca. 65 °C erwärmen. Das dient dazu, den Reiniger (Lauge) aus der Kartusche auszulösen.
6. 6. Ca. 60 Minuten Wasser und Reiniger (Lauge) bei 65°C umwälzen. Zwischenzeitlich auch mal zwei bis zehn Minuten den Behälter der Einrichtung 40 intern umwälzen.
7. 7. Wasser-Lauge-Gemisch abpumpen, Behälter der Einrichtung 40 mit Frischwasser befüllen.
8. 8. Drei Mal Frischwasser über Garraum 3 umwälzen, wieder abpumpen und den Behälter der Einrichtung 40 mit Frischwasser neu befüllen. Das dient dazu, die Lauge komplett aus dem Gerät 1 zu spülen.
9. 9. Wasser vom Behälter der Einrichtung 40 zum Garraum 3 umwälzen, dabei auf ca. 95°C erwärmen. Das dient dazu, den Entkalker (Zitronensäure) aus der Kartusche auszulösen.
10. 10. Ca. 20 Minuten Wasser und Entkalker (Zitronensäure) bei 90°C umwälzen. Zwischenzeitlich auch mal zwei bis zehn Minuten Behälter der Einrichtung 40 intern umwälzen.
11. 11. Wasser-Entkalker-Gemisch abpumpen, Behälter der Einrichtung 40 mit Frischwasser befüllen.
12. 12. Drei Mal Frischwasser über Garraum 3 umwälzen, wieder abpumpen und Behälter der Einrichtung 40 mit Frischwasser neu befüllen. Das dient dazu, die Säure komplett aus dem Gerät 1 zu spülen.

The cleaning process can have the following sequence of steps or at least a selection thereof:

1. 1. Circulate the water from the container of the device 40 to the cooking chamber 3 for approx. 10 minutes, heating it to approx. 50°C and circulating it while it is still warm. This is used to remove grease/dirt.
2. 2. Pump out the dirty water, fill the container of device 40 with fresh water.
3. 3. Circulate the fresh water briefly over the cooking compartment 3.
4. 4. Pump out the dirty water again, fill the container of device 40 with fresh water.
5. 5. Circulate the water from the container of the device 40 to the cooking chamber 3, heating it to approx. 65 °C. This serves to release the cleaner (lye) from the cartridge.
6. 6. Circulate water and cleaning agent (lye) at 65°C for approx. 60 minutes. In the meantime, circulate the container of the device 40 internally for two to ten minutes.
7. 7. Pump out the water-lye mixture, fill the container of device 40 with fresh water.
8. 8. Circulate fresh water three times over cooking chamber 3, pump out again and refill the container of device 40 with fresh water. This serves to flush the suds completely out of the device 1.
9. 9. Circulate the water from the container of the device 40 to the cooking chamber 3, heating it to approx. 95°C. This serves to release the descaler (citric acid) from the cartridge.
10. 10. Circulate water and descaler (citric acid) at 90°C for approx. 20 minutes. In the meantime, also circulate the container of the device 40 internally for two to ten minutes.
11. 11. Pump out the water/descaler mixture, fill the container of device 40 with fresh water.
12. 12. Circulate fresh water three times over cooking chamber 3, drain again and refill container 40 with fresh water. This serves to flush the acid completely out of the device 1.

Cleaner and descaler can be introduced into the receiving space 3 via a cartridge. The cartridge can contain cleaners and/or descalers. Lye, in particular caustic soda, is used in particular as a cleaning agent.

Acid, in particular citric acid, is used as the descaler. Other acids are also possible.

For more details of the cartridge, refer to the DE 10 2020 204 707.3 referred.

The following are with reference to the 16 and 17 further uses of the device 40 for the treatment of vapors shown.

The device 40 for treating vapors can also be used to improve a device 80 for extracting cooking vapors. In this case, it is in particular adapted to the usually significantly higher extraction capacity of such a vapor extraction device. In particular, it can be dimensioned larger in order to take into account the larger maximum volume flow.

The device 80 for extracting cooking vapors can be designed as an extractor hood. In particular, it can be designed as a device for extracting cooking vapors downwards. Devices 80 of this type are also referred to as hob ventilators or downdraft systems or, in particular if they are integrated into a cooktop, as cooktop extractors. The device 80 can in particular be part of a hob system 81 with one or more hobs 82 .

In particular, it is possible to design the hob system 81 as an assembly unit. In particular, it is possible to integrate all components of the hob system 81 into a single appliance. A corresponding design of the hob system 81 is also referred to as a compact appliance. Corresponding devices are, for example, from EP 2 975 327 B1 known, the description of which is hereby referred to.

The hob system 81 has a food support 83, in particular in the form of a glass ceramic plate. The cooking item support 83 can simply be designed to be continuous. In particular, it can have an inlet opening 84 for vapors, in particular in the form of cooking vapors.

The hob system 81 has electronic components, in particular in the form of hob electronics 85 . This is shown only very schematically in the figures. The cooktop electronics 85 are arranged underneath the food support 83 .

In addition, the hob system 81 includes one, two or more fans 86. The device 40 for treating vapors can be arranged in the flow area between the cooking vapor inlet opening 84 and the fan 86. It is also possible to arrange the device 40 downstream of the fan 86.

The device 40 is preferably arranged below the cooktop electronics 85 . This reduces the risk of the hob electronics 85 being damaged by cooling water from the device 40 . In particular, all cooling water-carrying elements of the device are preferably arranged below, in particular completely below, the cooktop electronics 85 and/or below electrical or electronic components of a control device of the cooktop system 81 .

The device 40 for treating vapors can in particular form a cooking vapor intake chamber or replace such a cooking vapor intake chamber.

A filter 87 , in particular a fat filter, can be provided in the flow area between the cooking vapor inlet opening 84 and the vapor inlet 41 .

The hob system 81 can have one or more additional filters, in particular odor filters, in particular activated charcoal filters, UV filters or plasma filters.

In particular, the hob system 81 may include one or more filters downstream of the fan 86 . In particular, it can have an odor filter, in particular in the form of an activated carbon filter, downstream of the fan 86 .

Like in the 17 is shown schematically, the device 40 for treating vapors and/or the fan 86 can be arranged in a base area 88 of a kitchen cupboard 89 . They can also be arranged on a kitchen cabinet. In particular, they can be embodied as separate modules which can essentially be positioned freely.

The device 40 for treating vapors can be integrated, in particular retrofitted, into existing devices, in particular fume hoods with at least one cooking fume suction chamber. The device 40 for treating vapors can be integrated into a cooking fume suction chamber or replace it. The dimensions of the device 40 for treating vapors and in particular the arrangement and/or design of the vapor inlet 41 and the vapor outlet 42 can be adapted to the corresponding details of the cooking vapor intake chamber.

With the help of the device 40 for the treatment of vapors, in particular the humidity of the same can be significantly reduced. As a result, a build-up of moisture in the area of kitchen furniture, in particular in areas that are difficult to access, for example behind kitchen furniture, can be reliably prevented. With the help of the device 40 for treating vapors, it is possible in particular to prevent moisture from the vapors from condensing on walls and/or furniture.

In the following, further details and advantages of the invention are described again in keywords, independently of the specific exemplary embodiments.

The inside of the container, in particular the inside of the base tray 43 and/or the cover 44 and/or the surface of the cooling plate 56, can preferably have a dirt-repellent coating and/or an antibacterial coating.

A dosing element can be provided for adding the fresh water to the container of the device 40 . The dosing element is designed in particular in such a way that it enables clocked dosing of the addition of fresh water.

When the cooling water drains from the cooling plate 56, a water curtain can form. The cooling water can also flow into the floor pan 43 through a large number of separate openings in the cooling plate 56 . As a result, the surface area of the cooling water that is available to react with the flow of vapor can be increased (the so-called rain shower effect).

The cooling water running off the cooling plate 56 can also be used for heat transfer and condensation of the vapor flow.

The cooling plate 56 can be provided with a rolled-in and/or embossed surface structure. It can also have a polished surface, at least in certain areas, in particular in the area of its underside. As a result, the cooling effect and/or the condensation of the vapors on the cooling plate 56 can be improved.

Cooling fins or other elements for dissipating heat can be arranged on the cooling plate 56 . In principle, elements of this type can extend through the cover 44 to the outside of the container of the device 40 . The cooling plate 56 can in particular be designed in such a way that it can be cooled from outside the container. In particular, it can be coupled in a heat-transferring manner to a heat exchanger which is arranged outside the container of the device 40 .

The device 40 is designed in such a way that it enables both continuous vapor deposition and short-term evacuation of the receiving space 3 . In this case, it is preferably designed in such a way that flow losses are kept as low as possible.

Depending on the operating mode, the addition of fresh water and/or the pumping out of waste water can be switched according to a defined flow chart. As a result, the heat capacity of the fresh water can be utilized particularly well. This can reduce water consumption.

The circulating flow in the floor pan 43 and the direction of flow of the vapors sucked out of the receiving space 3 can be opposite, at least in sections. The circulating flow can in particular form a countercurrent heat exchanger.

In particular, in an area adjacent to vapor outlet 42 in floor pan 43, the circulating flow can have a component which is opposite to a component of the vapor flow in this area, in particular a direction given by a connecting line from vapor inlet 41 to vapor outlet 42.

The device 40 can in particular have a connection to the fresh water and/or waste water network. Instead of a fixed water connection, the device 40 can also have a reservoir for fresh water and a reservoir for waste water within the cooking appliance 1 . The fresh water reservoir and the waste water reservoir can preferably be removed manually from the housing 2 of the cooking appliance 1 without tools. In particular, they can be filled and emptied manually.

The filling level sensor 64 can have a float, an electrical conductance meter, a distance meter, in particular an ultrasonic distance meter or a laser distance meter or another sensor.

The container of the device 40, in particular the floor pan 43, in particular all components of the container and all components arranged in the container, have media resistance to acids, in particular to citric acid and/or carbonic acid (sodium carbonate dissolved in water). They preferably also have media resistance to lye, in particular sodium hydroxide.

The free surface of the cooling water in the base pan 43 is preferably as large as possible in relation to the base area of the base pan 43. The ratio of the free surface of the cooling water in the base pan 43 to the base area of the base pan 43 is in particular at least 0.5, in particular at least 0.7, in particular at least 0.9, in particular at least 0.95.

A large surface of the cooling water ensures that as much reaction surface as possible is available for cooling and/or condensation of the vapor flow.

One or more means for enlarging the free surface of the cooling water in the container can be provided for a particularly efficient cooling of the vapor flow. These can include a selection of trickling agents, atomizing agents, and swirling agents. Such means can be provided in particular for adding fresh water to the device 40 . A blockage of the corresponding means due to contamination is not to be expected here.

A pressure-generating means can be provided for trickling and/or atomizing the cooling water.

To improve the cooling of the vapor flow, multi-stage cooling, in particular with pre-cooling and after-cooling, can be provided. This can further reduce water consumption.

It has proven to be advantageous to keep the volume of the cooling water in the floor pan 43 as small as possible. The cooling water or other liquids in the floor pan 43 can thus be pumped out and/or exchanged very quickly.

Breakwater elements can be provided to reduce, in particular to prevent, the formation of waves in the floor pan 43 . These are preferably transverse to the direction of flow of the vapor flow.

To protect the pumps 60, 63, retaining elements, in particular in the form of screens, can be provided.

QUOTES INCLUDED IN DESCRIPTION

This list of the documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102019205337 [0002]
• EP 2020/060413 PCT [0002, 0145, 0409]
• EP 2254422 B1 [0003]
• DE 102008012961 A1 [0003, 0281]
• EP 2975327 B1 [0191, 0424]
• DE 10158425 C1 [0263]
• DE 102020204707 [0416, 0420]

Claims (10)

Having a device for cleaning vapors 1.1. having a device (40) for treating vapors 1.1.1. a fluid-tight container 1.1.1.1. a vapor inlet (41), 1.1.1.2. a vapor outlet (42) and 1.1.1.3. a through-flow connection which connects the vapor inlet (41) to the vapor outlet (42), 1.1.2. wherein the container can be filled at least in regions with a cooling fluid and 1.1.3. the container having a base pan (43) and a lid (44), and 1.2. a fan (15) by means of which negative pressure can be applied to the container. Device according to claim 1 characterized in that the floor pan (43) has a floor area (66) sloping down to a lowered area (62). Device according to one of the preceding claims, characterized in that the through-flow connection has a flow cross-section which increases in the through-flow direction. Device according to one of the preceding claims , characterized by at least one filter device (25), 4.1. which is fluidly connected to the device (40) and 4.2. which is arranged downstream of the vapor outlet (42) of the device (40). Having a cooking appliance (1) for cooking food 5.1. a receiving space (3) for receiving and heating food to be cooked 5.1.1. a loading opening (8) for loading the receiving space (3) with food to be cooked and 5.1.2. a fluid outlet (20) for discharging vapors from the receiving space (3), 5.2. a device according to any one of the preceding claims, 5.3. wherein the fluid outlet (20) of the receiving space (3) is fluidly connected to the vapor inlet (41) of the device (40). Cooking appliance (1) according to Claim 25, characterized in that a reversibly detachable connecting piece (47) is provided for connecting the fluid outlet (20) of the receiving space (3) to the vapor inlet (41) of the device (40), which connecting piece (47) is sealed in the Recording space (3) can be latched, and which dips into the container in a movable manner through the vapor inlet (41). Having a cooking appliance (1) for cooking food 7.1. a receiving space (3) for receiving and heating food to be cooked 7.1.1. a loading opening (8) for loading the receiving space () with food to be cooked and 7.1.2. a fluid outlet (20) for discharging vapors from the receiving space (3), 7.1.3. wherein the receiving space (3) has a floor which slopes down towards the fluid outlet (20), 7.2. a ventilation device with a fan (15) for extracting vapors from the receiving space (3) and 7.3. having a device (40) for treating vapors sucked out of the receiving space (3). 7.3.1. a fluid-tight container 7.3.1.1. a vapor inlet (41), 7.3.1.2. a vapor outlet (42) and 7.3.1.3. a through-flow connection which connects the vapor inlet (41) to the vapor outlet (42) in a fluid-conducting manner, 7.4. wherein the fluid outlet (20) of the receiving space (3) is fluidly connected to the vapor inlet (41) of the device (40), and 7.5. wherein the device (40) is arranged in a negative pressure region of the fan (15). Process for treating vapors comprising the following steps: 8.1. Providing a cooking appliance (1) according to one of Claims 5 until 7 , 8.2. Suction of vapors from the receiving space (3), 8.3. the fumes being sucked through the device (40) for treating fumes. procedure according to claim 8 , characterized in that the vapors flow through to reduce their temperature and / or relative humidity in the container between two layers of liquid. Method for operating a cooking appliance (1) comprising the following steps: 10.1. Providing a cooking appliance (1) according to one of Claims 5 until 7 , 10.2. Generating a condition in the receiving space (3) with a temperature in a predetermined temperature range and/or a humidity in a predetermined humidity range, 10.3. controlled suction of vapors from the receiving space (3).

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